Help troubleshooting kernel panics & startup problem

My most recent kernel panic log:

Anonymous UUID: 24FC1A5F-67D2-F5BD-C768-DCA39F13AF97

Thu Apr 19 19:36:18 2018

*** Panic Report ***

panic(cpu 4 caller 0xffffff8005515e80): initproc exited -- exit reason namespace 2 subcode 0xa description: none

Thread 2 crashed

RAX: 0x0000000000000010, RBX: 0x000000010d871f28, RCX: 0x000000010d823a80, RDX: 0x000000010d86f000

RSP: 0x0000700009070040, RBP: 0x00007000090700e0, RSI: 0x000000000004b000, RDI: 0x000000010d874410

R8: 0x0000000000000000, R9: 0x0000000000000e20, R10: 0x000000010d823a10, R11: 0x0000000000000001

R12: 0x0000000000000001, R13: 0x0000000000001cf0, R14: 0x0000000000000001, R15: 0x0000000000000001

RFL: 0x0000000000010202, RIP: 0x00007fff581657c4, CS: 0x000000000000002b, SS: 0x0000000000000023

Thread 0: 0xffffff80181f1a10

0x00007fff582b002a

0x00007fff58131d10

0x0000000000000000

Thread 1: 0xffffff8035408ed0

0x00007fff582b15b2

0x00007fff58138ed1

0x00007fff581280d1

0x00007fff5813a0ca

0x00007fff5812d1b6

0x00007fff5813af5d

0x00007fff5813ed71

0x00007fff58476fd2

0x00007fff58476be9

0x0000000000000000

Thread 2: 0xffffff8018f46650

0x00007fff581657c4

0x00007fff58166a8d

0x00007fff58166ca5

0x00007fff5816e1c4

0x00007fff581c05b1

0x000000010d833ede

0x000000010d832ef2

0x00007fff58125e08

0x00007fff58138ed1

0x00007fff581280d1

0x00007fff5813a0ca

0x00007fff5812d1b6

0x00007fff5813af5d

0x00007fff5813ed71

0x00007fff58476fd2

0x00007fff58476be9

0x0000000000000000

Thread 3: 0xffffff801f13d160

0x00007fff582b0292

0x00007fff58476be9

0x0000000000000000

Thread 4: 0xffffff802f7d63c0

0x00007fff58476bdc

Mac OS version:

17E199

Kernel version:

Darwin Kernel Version 17.5.0: Mon Mar 5 22:24:32 PST 2018; root:xnu-4570.51.1~1/RELEASE_X86_64

Kernel UUID: 1B55340B-0B14-3026-8A47-1E139DB63DA3

System model name: iMac12,1 (Mac-942B5BF58194151B)

Root disk errors: "Could not recover SATA HDD after 5 attempts. Terminating."

EOF

2nd most recent kernel panic log:

Anonymous UUID: 24FC1A5F-67D2-F5BD-C768-DCA39F13AF97

Thu Apr 19 08:27:54 2018

*** Panic Report ***

panic(cpu 4 caller 0xffffff8027388c2d): Kernel trap at 0xffffff7faa24560e, type 14=page fault, registers:

CR0: 0x000000008001003b, CR2: 0xffffff81196f7000, CR3: 0x000000002b2a8000, CR4: 0x00000000000626e0

RAX: 0xffffff81196f6f00, RBX: 0xffffff80480d56c0, RCX: 0xffffff7faa50a8b0, RDX: 0xffffff8027a9d688

RSP: 0xffffff9135043db0, RBP: 0xffffff9135043dd0, RSI: 0xffffff80479066c0, RDI: 0xffffff80480d56c0

R8: 0x0000000000000000, R9: 0x0000000000000240, R10: 0x00000000153e3074, R11: 0xffff800000000000

R12: 0x0000000000000000, R13: 0xffffff803db6bb00, R14: 0xffffff80479066c0, R15: 0x0000000000000000

RFL: 0x0000000000010286, RIP: 0xffffff7faa24560e, CS: 0x0000000000000008, SS: 0x0000000000000010

Fault CR2: 0xffffff81196f7000, Error code: 0x0000000000000000, Fault CPU: 0x4, PL: 0, VF: 10

Backtrace (CPU 4), Frame : Return Address

0xffffff9135043860 : 0xffffff802726e166

0xffffff91350438b0 : 0xffffff8027396714

0xffffff91350438f0 : 0xffffff8027388a00

0xffffff9135043970 : 0xffffff8027220180

0xffffff9135043990 : 0xffffff802726dbdc

0xffffff9135043ac0 : 0xffffff802726d99c

0xffffff9135043b20 : 0xffffff8027388c2d

0xffffff9135043ca0 : 0xffffff8027220180

0xffffff9135043cc0 : 0xffffff7faa24560e

0xffffff9135043dd0 : 0xffffff7faa24b592

0xffffff9135043e10 : 0xffffff7faa2360b0

0xffffff9135043e50 : 0xffffff7faa234c70

0xffffff9135043e70 : 0xffffff7faa260493

0xffffff9135043eb0 : 0xffffff7faa25c9ad

0xffffff9135043ed0 : 0xffffff802789a005

0xffffff9135043f30 : 0xffffff8027898772

0xffffff9135043f70 : 0xffffff8027897dac

0xffffff9135043fa0 : 0xffffff802721f4f7

Kernel Extensions in backtrace:

com.apple.iokit.IOAcceleratorFamily2(378.18.1)[BAA0383C-9650-3934-B04A-69008F75 7A2C]@0xffffff7faa230000->0xffffff7faa2c6fff

dependency: com.apple.driver.AppleMobileFileIntegrity(1.0.5)[54CD88E5-9FD7-30FC-89A0-E4B2D0 CE6F85]@0xffffff7fa8213000

dependency: com.apple.iokit.IOSurface(211.12)[E998B85B-3174-3C25-B82B-C0D8BD9720E5]@0xfffff f7fa9c51000

dependency: com.apple.iokit.IOPCIFamily(2.9)[1850E7DA-E707-3027-A3AA-637C80B57219]@0xffffff 7fa7a94000

dependency: com.apple.iokit.IOGraphicsFamily(519.15)[D5F2A20D-CAB0-33B2-91B9-E8755DFC34CB]@ 0xffffff7fa824e000

BSD process name corresponding to current thread: kernel_task

Mac OS version:

17E199

Kernel version:

Darwin Kernel Version 17.5.0: Mon Mar 5 22:24:32 PST 2018; root:xnu-4570.51.1~1/RELEASE_X86_64

Kernel UUID: 1B55340B-0B14-3026-8A47-1E139DB63DA3

Kernel slide: 0x0000000027000000

Kernel text base: 0xffffff8027200000

__HIB text base: 0xffffff8027100000

System model name: iMac12,1 (Mac-942B5BF58194151B)

System uptime in nanoseconds: 4153319894282

last loaded kext at 257769450984: com.apple.filesystems.msdosfs 1.10 (addr 0xffffff7faa9fc000, size 69632)

last unloaded kext at 1331428249367: com.apple.driver.usb.cdc 5.0.0 (addr 0xffffff7fa82de000, size 36864)

loaded kexts:

com.google.dfsfuse.filesystems.dfsfuse 3.7.2

com.sophos.kext.oas 9.7.4

com.sophos.nke.swi 9.7.4

com.sophos.kext.sfm 9.7.4

org.virtualbox.kext.VBoxNetAdp 5.2.6

org.virtualbox.kext.VBoxNetFlt 5.2.6

org.virtualbox.kext.VBoxUSB 5.2.6

com.paceap.kext.pacesupport.snowleopard 5.9.1

org.virtualbox.kext.VBoxDrv 5.2.6

com.apple.driver.AudioAUUC 1.70

com.apple.filesystems.autofs 3.0

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.driver.AGPM 110.23.33

com.apple.driver.AppleMikeyHIDDriver 131

com.apple.driver.AppleMikeyDriver 281.51

com.apple.AGDCPluginDisplayMetrics 3.18.48

com.apple.driver.AppleUpstreamUserClient 3.6.5

com.apple.kext.AMDLegacyFramebuffer 1.6.6

com.apple.driver.AppleHV 1

com.apple.iokit.IOUserEthernet 1.0.1

com.apple.driver.AppleHDA 281.51

com.apple.kext.AMDRadeonX3000 1.6.6

com.apple.iokit.IOBluetoothSerialManager 6.0.5f3

com.apple.driver.AppleIntelHD3000Graphics 10.0.4

com.apple.kext.AMD6000Controller 1.6.6

com.apple.driver.eficheck 1

com.apple.driver.AppleBacklight 170.12.6

com.apple.driver.pmtelemetry 1

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AppleThunderboltIP 3.1.1

com.apple.driver.AppleSMCPDRC 1.0.0

com.apple.driver.AppleLPC 3.1

com.apple.driver.AppleSMCLMU 211

com.apple.driver.AppleOSXWatchdog 1

com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0

com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0

com.apple.driver.AppleIntelSNBGraphicsFB 10.0.4

com.apple.driver.AppleMCCSControl 1.5.4

com.apple.driver.AppleIRController 353

com.apple.driver.AppleUSBStorageCoexistentDriver 439.50.6

com.apple.driver.AppleUSBCardReader 439.50.6

com.apple.filesystems.hfs.kext 407.50.6

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.BootCache 40

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0

com.apple.iokit.SCSITaskUserClient 404.30.2

com.apple.filesystems.apfs 748.51.0

com.apple.iokit.AppleBCM5701Ethernet 10.3.1

com.apple.driver.AppleFWOHCI 5.5.9

com.apple.driver.AirPort.Atheros40 700.74.5

com.apple.driver.AppleAHCIPort 329.50.2

com.apple.driver.AppleACPIButtons 6.1

com.apple.driver.AppleRTC 2.0

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleSMBIOS 2.1

com.apple.driver.AppleACPIEC 6.1

com.apple.driver.AppleAPIC 1.7

com.apple.driver.AppleIntelCPUPowerManagementClient 220.50.1

com.apple.nke.applicationfirewall 183

com.apple.security.TMSafetyNet 8

com.apple.security.quarantine 3

com.apple.driver.AppleIntelCPUPowerManagement 220.50.1

com.apple.iokit.IOUSBUserClient 900.4.1

com.apple.kext.triggers 1.0

com.apple.iokit.IOAVBFamily 675.6

com.apple.plugin.IOgPTPPlugin 675.12

com.apple.driver.DspFuncLib 281.51

com.apple.kext.OSvKernDSPLib 526

com.apple.driver.AppleSSE 1.0

com.apple.iokit.IOAcceleratorFamily2 378.18.1

com.apple.iokit.IOSurface 211.12

com.apple.iokit.IOSerialFamily 11

com.apple.driver.AppleBacklightExpert 1.1.0

com.apple.iokit.IONDRVSupport 519.15

com.apple.AppleGPUWrangler 3.18.48

com.apple.AppleGraphicsDeviceControl 3.18.48

com.apple.driver.AppleHDAController 281.51

com.apple.iokit.IOHDAFamily 281.51

com.apple.iokit.IOAudioFamily 206.5

com.apple.vecLib.kext 1.2.0

com.apple.driver.AppleSMBusPCI 1.0.14d1

com.apple.kext.AMDLegacySupport 1.6.6

com.apple.iokit.IOFireWireIP 2.2.9

com.apple.driver.IOPlatformPluginLegacy 1.0.0

com.apple.driver.IOPlatformPluginFamily 6.0.0d8

com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0

com.apple.driver.AppleThunderboltEDMSink 4.1.4

com.apple.driver.AppleSMBusController 1.0.18d1

com.apple.iokit.IOGraphicsFamily 519.15

com.apple.driver.AppleHIDKeyboard 205

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 6.0.5f3

com.apple.iokit.IOBluetoothHostControllerUSBTransport 6.0.5f3

com.apple.iokit.IOBluetoothHostControllerTransport 6.0.5f3

com.apple.iokit.IOBluetoothFamily 6.0.5f3

com.apple.driver.usb.IOUSBHostHIDDevice 1.2

com.apple.iokit.IOUSBMassStorageClass 4.0.4

com.apple.driver.usb.networking 5.0.0

com.apple.driver.usb.AppleUSBHostCompositeDevice 1.2

com.apple.driver.usb.AppleUSBHub 1.2

com.apple.filesystems.hfs.encodings.kext 1

com.apple.iokit.IOSCSIMultimediaCommandsDevice 404.30.2

com.apple.iokit.IOBDStorageFamily 1.8

com.apple.iokit.IODVDStorageFamily 1.8

com.apple.iokit.IOCDStorageFamily 1.8

com.apple.driver.AppleThunderboltDPInAdapter 5.5.3

com.apple.driver.AppleThunderboltDPOutAdapter 5.5.3

com.apple.driver.AppleThunderboltDPAdapterFamily 5.5.3

com.apple.driver.AppleThunderboltPCIDownAdapter 2.1.3

com.apple.iokit.IOAHCISerialATAPI 267.50.1

com.apple.iokit.IOAHCIBlockStorage 301.40.2

com.apple.driver.AppleThunderboltNHI 4.7.2

com.apple.iokit.IOThunderboltFamily 6.7.8

com.apple.iokit.IOEthernetAVBController 1.1.0

com.apple.driver.mDNSOffloadUserClient 1.0.1b8

com.apple.iokit.IOFireWireFamily 4.7.0

com.apple.iokit.IO80211Family 1200.12.2

com.apple.driver.corecapture 1.0.4

com.apple.iokit.IOAHCIFamily 288

com.apple.driver.usb.AppleUSBEHCIPCI 1.2

com.apple.driver.usb.AppleUSBEHCI 1.2

com.apple.driver.usb.AppleUSBHostPacketFilter 1.0

com.apple.iokit.IOUSBFamily 900.4.1

com.apple.driver.AppleUSBHostMergeProperties 1.2

com.apple.driver.AppleEFINVRAM 2.1

com.apple.driver.AppleEFIRuntime 2.1

com.apple.iokit.IOHIDFamily 2.0.0

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 300.0

com.apple.kext.AppleMatch 1.0.0d1

com.apple.driver.DiskImages 480.50.10

com.apple.driver.AppleFDEKeyStore 28.30

com.apple.driver.AppleEffaceableStorage 1.0

com.apple.driver.AppleKeyStore 2

com.apple.driver.AppleUSBTDM 439.50.6

com.apple.driver.AppleMobileFileIntegrity 1.0.5

com.apple.iokit.IOUSBMassStorageDriver 140.50.3

com.apple.iokit.IOSCSIBlockCommandsDevice 404.30.2

com.apple.iokit.IOSCSIArchitectureModelFamily 404.30.2

com.apple.iokit.IOStorageFamily 2.1

com.apple.driver.AppleCredentialManager 1.0

com.apple.driver.KernelRelayHost 1

com.apple.iokit.IOUSBHostFamily 1.2

com.apple.driver.usb.AppleUSBCommon 1.0

com.apple.driver.AppleBusPowerController 1.0

com.apple.driver.AppleSEPManager 1.0.1

com.apple.driver.IOSlaveProcessor 1

com.apple.iokit.IOReportFamily 31

com.apple.iokit.IOTimeSyncFamily 675.12

com.apple.iokit.IONetworkingFamily 3.4

com.apple.driver.AppleACPIPlatform 6.1

com.apple.driver.AppleSMC 3.1.9

com.apple.iokit.IOPCIFamily 2.9

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.pthread 1

com.apple.kec.Libm 1

com.apple.kec.corecrypto 1.0

EOF

So far I have not had another kernel panic, as far as I can tell, (have also disconnected external hard drives), but I continue to have programs quitting on me randomly. For example, yesterday the Finder restarted for no obvious reason and iTunes quit unexpectedly in the middle of playing a song, and then this morning I woke to a crash report for firefox and in the activity monitor it has been showing Dropbox is not responding for the last hour and a half (force quitting that now). So, it does not look as though I am done on this.

I notice 31% of my CPU is being used by kernel_task with a CPU time of 46 minutes and 148 threads being shown in activity monitor. Is that normal?

Thank you, again, for your help.

EtreCheck version: 4.2.1 (4C020)

Report generated: 2018-04-24 04:59:24

Download EtreCheck from https://etrecheck.com

Runtime: 6:30

Performance: Below Average

Problem: Computer is restarting

Description:

2-3 times in last week computer has restarted to the question mark folder without any user interaction initiating the restart. Other times it has restarted without provocation, but appeared to restart normally.

Major Issues:

Anything that appears on this list needs immediate attention.

Time Machine backup out-of-date- The last Time Machine backup is over 10 days old.

Kernel panics- This system has experienced kernel panics. This could be a sign of hardware failure.

Heavy CPU usage- Some processes are using an unusually high amount of CPU.

Minor Issues:

These issues do not need immediate attention but they may indicate future problems.

Apps crashing- There have been numerous app crashes.

Apps with heavy CPU usage- There have been numerous cases of apps with heavy CPU usage.

Clean up- There are orphan files that could be removed.

Unsigned files- There is unsigned software installed. They appear to be legitimate but should be reviewed.

Low performance- EtreCheck report took over 5 minutes to run. This is unusual.

32-bit Apps- This machine has 32-bits apps that may have problems in the future.

Hardware Information:

iMac (21.5-inch, Mid 2011)

iMac Model: iMac12,1

1 2.8 GHz Intel Core i7 (i7-2600S) CPU: 4-core

8 GB RAMUpgradeable

BANK 0/DIMM0 - 2 GB DDR3 1333 ok

BANK 1/DIMM0 - 2 GB DDR3 1333 ok

BANK 0/DIMM1 - 4 GB DDR3 1333 ok

BANK 1/DIMM1 - Empty

Video Information:

AMD Radeon HD 6770M - VRAM: 512 MB

iMac 1920 x 1080

Acer P205H 1600 x 900 @ 60 Hz

Drives:

disk0 - ST3000DM008-2DM166 3.00 TB (Mechanical)

Internal SATA 6 Gigabit Serial ATA

disk0s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk0s2 - I*********D (Journaled HFS+) 3.00 TB

disk1 - OCZ-VERTEX3 120.03 GB (Solid State - TRIM: No)

Internal SATA 6 Gigabit Serial ATA

disk1s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk1s2 () 119.82 GB

disk2s1 - I**********D (APFS) 119.82 GB (73.52 GB used)

disk2s2 - Preboot (APFS) [APFS Preboot] 119.82 GB (23 MB used)

disk2s3 - Recovery (APFS) [Recovery] 119.82 GB (518 MB used)

disk2s4 - VM (APFS) [APFS VM] 119.82 GB (20 KB used)

Mounted Volumes:

disk0s2 - I*********D 3.00 TB (1.83 TB free)

Journaled HFS+

Mount point: /Volumes/I*********D

disk2s1 - I**********D 119.82 GB (45.64 GB free)

APFS

Mount point: /

disk2s4 - VM [APFS VM] 119.82 GB (45.64 GB free)

APFS

Mount point: /private/var/vm

Network:

Interface usbmodemFD1410: MT65xx Preloader 2

Interface usbmodemFA1310: MT65xx Preloader

Interface en0: Ethernet

Interface en12: iPhone 8

Interface en11: iPhone 7

Interface en10: iPhone 6

One IPv4 address

Interface en8: iPad

Interface en7: iPhone 4

Interface fw0: FireWire

Interface en1: Wi-Fi

802.11 a/b/g/n

One IPv4 address

Interface en4: iPhone

Interface en5: iPhone 2

Interface en6: iPhone 3

Interface en9: iPhone 5

Interface en13: iPhone 9

Interface en3: Bluetooth PAN

Interface bridge0: Thunderbolt Bridge

iCloud Quota: 40.78 GB available

System Software:

macOS High Sierra 10.13.4 (17E199)

Time since boot: Less than an hour

System Load: 3.30 (1 min ago) 1.97 (5 min ago) 0.95 (15 min ago)

Security:

Unsigned Files:

Launchd: /Library/LaunchDaemons/PACESupport.plist

Executable: /System/Library/Extensions/PACESupportFamily.kext/Contents/Resources/paceload

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/com.oracle.java.Helper-Tool.plist

Executable: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/Helper-Tool

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchAgents/com.oracle.java.Java-Updater.plist

Executable: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/Java Updater.app/Contents/MacOS/Java Updater -bgcheck

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/org.virtualbox.startup.plist

Executable: /Library/Application Support/VirtualBox/LaunchDaemons/VirtualBoxStartup.sh restart

Details: Exact match found in the whitelist - probably OK

32-bit Applications:

3 32-bit apps

Kernel Extensions:

/Library/Application Support/VirtualBox

[Loaded] VBoxDrv.kext (Oracle America, Inc., 5.2.6)

[Loaded] VBoxNetAdp.kext (Oracle America, Inc., 5.2.6)

[Loaded] VBoxNetFlt.kext (Oracle America, Inc., 5.2.6)

[Loaded] VBoxUSB.kext (Oracle America, Inc., 5.2.6)

/System/Library/Extensions

[Not Loaded] PACESupportFamily.kext (5.9.1 - SDK 10.6)

/System/Library/Extensions/PACESupportFamily.kext/Contents/PlugIns

[Not Loaded] PACESupportLeopard.kext (5.9.1 - SDK 10.4)

[Not Loaded] PACESupportPanther.kext (5.9.1 - SDK 10.-1)

[Loaded] PACESupportSnowLeopard.kext (5.9.1 - SDK 10.6)

[Not Loaded] PACESupportTiger.kext (5.9.1 - SDK 10.4)

System Launch Agents:

System Launch Daemons:

Launch Agents:

Launch Daemons:

User Launch Agents:

User Login Items:

Dropbox Application (Dropbox, Inc.

(/Applications/Dropbox.app)

Google Chrome Application (Google, Inc.

(/Applications/Google Chrome.app)

Amazon Drive Application (?

(/Applications/Amazon Drive.app)

iTunesHelper Application (Apple - installed 2018-03-31)

(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

VoilaHelper SMLoginItem (Mac App Store - installed 2017-03-05)

(/Applications/Voila.app/Contents/Library/LoginItems/VoilaHelper.app)

openAtLoginLauncher.pasteboardSyncForMac SMLoginItem (Mac App Store - installed 2018-02-24)

(/Applications/CloudClip Manager.app/Contents/Library/LoginItems/openAtLoginLauncher.pasteboardSyncForMa c.app)

1Password mini SMLoginItem (Mac App Store - installed 2018-03-17)

(/Applications/1Password.app/Contents/Library/LoginItems/2BUA8C4S2C.com.agilebit s.onepassword-osx-helper.app)

Internet Plug-ins:

Silverlight: 5.1.50901.0 (installed 2017-10-08)

FlashPlayer-10.6: 29.0.0.140 (installed 2018-04-10)

Flash Player: 29.0.0.140 (installed 2018-04-10)

QuickTime Plugin: 7.7.3 (installed 2018-04-07)

JavaAppletPlugin: Java 8 Update 171 build 11 (installed 2018-04-20)

PepperFlashPlayer: 29.0.0.140 (installed 2018-04-10)

Safari Extensions:

3rd Party Preference Panes:

Flash Player (installed 2018-03-26)

Java (installed 2018-04-18)

Time Machine:

Skip System Files: No

Mobile backups: No

Auto backup: Yes

Volumes being backed up:

I**********D: Disk size: 119.82 GB - Disk used: 74.18 GB

Destinations:

S************p [Local] (Last used)

Total size: 3.00 TB

Total number of backups: 82

Oldest backup: 2017-03-10 03:00:01

Last backup: 2018-04-05 22:48:08

Top Processes by CPU:

Top Processes by Memory:

Top Processes by Network Use:

Top Processes by Energy Use:

Virtual Memory Information:

Clean up:

~/Library/LaunchAgents/com.google.keystone.agent.plist

/Users/***/Library/Google/GoogleSoftwareUpdate/GoogleSoftwareUpdate.bundle/Conte nts/Resources/GoogleSoftwareUpdateAgent.app/Contents/MacOS/GoogleSoftwareUpdateA gent

Executable not found

Diagnostics Information (past 7 days):

2018-04-24 04:48:03 Last Shutdown Cause: 3 - Hard shutdown (once)

2018-04-23 05:23:35 cupsd Crash (once)

2018-04-23 05:19:29 SubmitDiagInfo Crash (once)

2018-04-23 05:19:22 coreservicesd Crash (once)

2018-04-23 05:19:22 commerced Crash (once)

2018-04-23 05:19:22 storeaccountd Crash (once)

2018-04-23 05:18:19 Safari.app Crash (once)

2018-04-23 05:18:14 com.apple.WebKit.Networking Crash (once)

2018-04-23 05:18:13 CoreServicesUIAgent.app Crash (once)

2018-04-22 18:12:08 gamed Crash (once)

2018-04-22 18:12:02 ReportCrash Crash (9 times)

2018-04-22 10:10:04 syslogd Crash (once)

2018-04-21 09:15:08 mdworker Crash (once)

2018-04-20 22:31:48 Sophos Home.app Hang (once)

2018-04-20 22:31:18 Mail.app Hang (once)

2018-04-20 09:05:10 Dropbox.app CPU (3 times)

2018-04-20 08:41:12 ContactsAgent Crash (once)

2018-04-20 08:41:06 coresymbolicationd Crash (once)

2018-04-20 08:41:04 sharedfilelistd Crash (once)

2018-04-20 08:40:49 hidd Crash (2 times)

2018-04-20 08:40:48 systemstats Crash (3 times)

2018-04-20 08:39:15 logd Crash (2 times)

2018-04-20 08:38:04 backupd Crash (once)

2018-04-20 08:35:25 mds_stores Crash (2 times)

2018-04-20 08:32:25 Firefox.app Crash (once)

2018-04-20 08:32:22 Dock.app Crash (once)

2018-04-20 08:32:21 PressAndHold.app Crash (once)

2018-04-20 08:30:42 WindowServer Crash (once)

2018-04-20 08:23:52 Kernel Panic (10 times)

2018-04-19 18:57:21 authd Crash (3 times)

2018-04-19 18:57:10 Google Chrome.app Crash (once)

2018-04-19 18:56:51 diskmanagementd Crash (once)

2018-04-19 18:33:40 SophosMcsAgentD Crash (once)

2018-04-18 21:42:07 warmd Crash (once)

2018-04-18 21:00:19 analyticsd Crash (once)

2018-04-17 14:09:04 mdwrite CPU (9 times)

2018-04-17 07:08:29 SophosEventMonitor Crash (once)

2018-04-17 07:05:01 Amazon Drive.app CPU (9 times)

End of report

I did reboot into safe mode and other than web pages paging (I think that is what it is called when images redraw rather than scroll smoothly), things worked as expected while I had it booted into safe mode.

Here is an Etrecheck report for restarting (I am not sure if the check is the same for beach balling or software crashing, which I have also been experiencing).

I think we may be on to something with this hardware test. It found 1 error:

4MOT/4/40000003: HDD-1241

What seems odd about this is that I do not have my system running off the HDD. I installed an SSD and have the system running off of that, but have my user account located on my HDD.

Another possible piece to this puzzle is that when I went back to try and run a repair disk on the SSD I got an error while checking the fsroot tree

error: drec_key object(oid 0x6b6c9): invalid has(0, expected 1d15c) of name (.store.db)

Any clues as to whether these errors indicate failure of either drive?

History: I did the SSD install in 2013. The HDD I swapped last year for a larger one when the original one showed signs of failing.

Isn't there a utility people use for monitoring fans and temperatures? Seems like I had one at one point.

I would try the fan replacement if I can find one to buy. iFixit is out of the part. I have this particular machine apart 4-5 times and done other iMacs and iPhones without trouble and am up for the challenge as this machine is probably not worth $300 and the depot price I am guessing would be at least $150. Maybe I will check with my local computer shop that claims they work on Macs.

So, since my fans seems to be working for the HDD and it is possible the SSD is what was really indicated as failing, maybe I will just try and install the OS on the HDD not use the SSD for a while. If problems go away, that seems to be the logical cause.

My only doubt would be if the diagnostic really were referring to the HDD fan - that would not be explained by the SSD failure.

I still have my optical drive. This model actually sold with an optional SSD that Apple would fit behind the optical drive. Here is a guide I followed when installing: Installing iMac Intel 21.5" EMC 2428 Dual Drive Kit - iFixit

Mike - would it still point to the HDD failing if it is not used for the system - just the user home folder?

Maybe I should create a new user and run off of that for a while and have it all on the SSD so the HDD is not accessed for anything? Let's call that option 1.
Alternatively, I could follow my previous plan and install the OS on the HDD and not use the SSD for anything. Let's call that option 2.

Which do you think is the more logical next step?

I partitioned my HDD thinking I would install the OS on the new partition without disturbing my data on the HDD and the partitioning went fine, but the install failed twice stating there was a hardware problem and to run the hardware diagnostic we ran earlier. I ran it again just to be sure and had the same error. Not sure if that is indicative of anything in particular as perhaps part of the install process simply runs a similar test and halts the install process before moving ahead.

I think I should try creating a new user account that is only on the SSD and see if there are issues then. Will try tomorrow.