My 21.5-inch iMac freezes up/glitches everytime I stream and watch online videos on YouTube whether on Safari or Chrome. My computer doesn’t give me the option to click and restart by clicking the apple icon in the top left, it completely freezes. Also, by the cursor there is a black glitched out box that I cannot describe. My mouse is a HP wireless mouse that is hooked up on my computer (USB).
If anyone knows how I can solve this problem, please help.
Etrecheck was developed by one of the most trusted contributors to these forums. It's a diagnostic tool that we all use and recommend, even Apple at times. We wouldn't recommend anything that might be dangerous or even questionable
Without some needed information, no one can help.
What Mac model/year?
Which Mac OS?
How much RAM is installed?
How much free space on your hard drive?
If you'd like you can download, run, and then copy the entire report result here - it'll show if there is something installed that may be causing the problem:
Here is my report. From what I'm seeing, the report is showing that my computer has no problems, yet it freezes, crashes, and glitches when I stream media/vids on Youtube or Netflix.
EtreCheck version: 4.1.3 (4A188)
Report generated: 2018-03-15 12:37:48
Download EtreCheck from https://etrecheck.com
Runtime: 3:12
Performance: Good
Problem: Apps are crashing
Description:
Freezing and Glitching
Major Issues:
Anything that appears on this list needs immediate attention.
No Time Machine backup - Time Machine backup not found.
Minor Issues:
These issues do not need immediate attention but they may indicate future problems.
Vintage hardware - This machine may be considered vintage.
32-bit Apps - This machine has 32-bits apps that may have problems in the future.
Hardware Information:
iMac (21.5-inch, Mid 2010) - Vintage!
iMac Model: iMac11,2
1 3.06 GHz Intel Core i3 (i3) CPU: 2-core
12 GB RAM Upgradeable
BANK 0/DIMM0
4 GB DDR3 1333 ok
BANK 1/DIMM0
4 GB DDR3 1333 ok
BANK 0/DIMM1
2 GB DDR3 1333 ok
BANK 1/DIMM1
2 GB DDR3 1333 ok
Video Information:
ATI Radeon HD 4670 - VRAM: 256 MB
iMac 1920 x 1080
Drives:
disk0 - WDC WD5000AAKS-40V6A0 500.11 GB (Mechanical)
Internal SATA 3 Gigabit Serial ATA
disk0s1 - EFI (MS-DOS FAT32) [EFI] 210 MB
disk0s2 - Macintosh HD (Journaled HFS+) 499.25 GB
disk0s3 - Recovery HD (Journaled HFS+) [Recovery] 650 MB
Mounted Volumes:
disk0s2 - Macintosh HD 499.25 GB (480.24 GB free)
Journaled HFS+
Mount point: /
Network:
Interface en0: Ethernet
Interface en3: iPhone
Interface fw0: FireWire
Interface en1: Wi-Fi
802.11 a/b/g/n
One IPv4 address
One IPv6 address
Interface en2: Bluetooth PAN
iCloud Quota: 159 MB available
System Software:
macOS High Sierra 10.13.3 (17D47)
Time since boot: Less than an hour
System Load: 5.06 (1 min ago) 4.82 (5 min ago) 2.31 (15 min ago)
Security:
| System | Status |
|---|---|
| Gatekeeper | Mac App Store and identified developers |
| System Integrity Protection | Enabled |
32-bit Applications:
| Name | Version |
| InkServer | 10.9 |
| quicklookd32 | 5.0 |
System Launch Agents:
| [Not Loaded] | 8 Apple tasks |
| [Loaded] | 165 Apple tasks |
| [Running] | 117 Apple tasks |
System Launch Daemons:
| [Not Loaded] | 36 Apple tasks |
| [Loaded] | 176 Apple tasks |
| [Running] | 119 Apple tasks |
User Launch Agents:
| [Loaded] | com.spotify.webhelper.plist (Spotify - installed 2018-02-26) |
| [Loaded] | com.google.keystone.agent.plist (Google, Inc. - installed 2018-02-03) |
User Login Items:
iTunesHelper Application (Apple, Inc. - installed 2018-03-07)
(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Internet Plug-ins:
QuickTime Plugin: 7.7.3 (installed 2018-01-19)
Safari Extensions:
| Shoptagr.safariextz - Shoptagr - http://www.shoptagr.com/ (installed 2018-03-08) |
Time Machine:
Time Machine Not Configured!
Top Processes by CPU:
| Process (count) | Source | % of CPU |
| sandboxd | Apple | 15 |
| WindowServer | Apple | 4 |
| kernel_task | Apple | 1 |
| launchd | Apple | 0 |
| trustd (4) | Apple | 0 |
Top Processes by Memory:
| Process (count) | Source | RAM usage |
| kernel_task | Apple | 768 MB |
| softwareupdated | Apple | 644 MB |
| com.apple.WebKit.WebContent (4) | Apple | 490 MB |
| mdworker (19) | Apple | 410 MB |
| Apple | 161 MB |
Top Processes by Network Use:
| Process | Source | Input | Output |
| Apple | 21 MB | 18 KB | |
| apsd | Apple | 411 KB | 97 KB |
| com.apple.WebKit.Networking | Apple | 402 KB | 51 KB |
| mDNSResponder | Apple | 17 KB | 13 KB |
| com.apple.Safari.SearchHelper | Apple | 2 KB | 1 KB |
Top Processes by Energy Use:
| Process (count) | Source | Energy usage (0-100) |
| WindowServer | Apple | 3 |
| launchd | Apple | 0 |
| opendirectoryd | Apple | 0 |
| Safari | Apple | 0 |
| Google Chrome Helper | Google, Inc. | 0 |
Virtual Memory Information:
| Available RAM | 7.69 GB |
| Free RAM | 4.44 GB |
| Used RAM | 4.31 GB |
| Cached files | 3.25 GB |
| Swap Used | 0 B |
Diagnostics Information (past 7 days):
2018-03-15 12:28:43 Last Shutdown Cause: 0 - Power loss (once)
2018-03-12 15:51:25 Kernel Kernel Panic (once)
3rd Party Kernel Extensions: None |
End of report
Yes, there's none of the usual suspects listed.
Did the memory come with the computer or did you add it yourself? If yourself where did you get the modules? You might check to make sure they are all securely seated in their slots.
Do you have the disks that came with the computer? You will need them to run the Apple Hardware Tests. Otherwise you should make an appointment at the nearest Apple Genius bar for a free diagnostic. Since it's classified as vintage they won't be able to work on it but a local Apple Authorized Service Provider can. They can be found via https://locate.apple.com/
However, if it turns out you need to replace some expensive components you might be better served to get a new or refurbished Mac from Apple.
I am wondering about the shut down due to a power loss on 3/15 and you had a kernel panic on 3/12.
It is a vintage product (7 years old) and you also have a slow 5400 rpm hard drive (30+% slower than the default 7200 rpm drive in 27" iMacs). Even though you appear to have enough RAM (do check as suggested), running the latest OS on a vintage machine will never result in a completely satisfactory experience. It will help not to stress the processor, etc. by only having one thing open at a time and quitting it before you open another, especially when streaming (which requires a lot of resources).
My guess is a Failing hard drive. This won’t necessarily show in an EtreCheck report. I see no evidence you back up this computer though which is alarmin (no Time Machine backup) so that would be the first thing to do. Then take it to your local Apple Authorized Service Provider to have it professionally diagnosed & repaired.
iMac:
(21.5-inch, Mid 2010)
Processor:
3.06 Ghz Intel Core i3
Memory:
12 GB 1333 MHz DDR3
Graphics:
ATI Radeon HD 4670 256 MB
Running: macOS High Sierra
Thank You for the link, but how do I know it is safe to run on my Mac?
It’s extremely safe to run. Thousands before you have installed it ( including me) with zero issues. It is helpful uncovering obvious issues.
Most of the senior contributors here know Etrecheck's developer personally. I trust him completely.
Does anyone know what’s going on?
