Why is my MacBook Pro extremely slow

Hi.

My MacBook Pro has recently began to run extremely slow. I have tried several clean up guides from you tube, but so far nothing has helped.

My battery is completely dead, so I only run with the charger connected.

I have done the etreecheck and here are the results:

Problem description:

My Mac is running extremely slow

EtreCheck version: 2.1.6 (109)

Report generated 17. jan. 2015 kl. 14.51.16 CET

Download EtreCheck from http://etresoft.com/etrecheck

Click the [Support] links for help with non-Apple products.

Click the [Details] links for more information about that line.

Click the [Adware] links for help removing adware.

Hardware Information: ℹ️

MacBook Pro (13-inch, Early 2011) (Technical Specifications)

MacBook Pro - model: MacBookPro8,1

1 2.3 GHz Intel Core i5 CPU: 2-core

4 GB RAM Upgradeable

BANK 0/DIMM0

2 GB DDR3 1333 MHz ok

BANK 1/DIMM0

2 GB DDR3 1333 MHz ok

Bluetooth: Old - Handoff/Airdrop2 not supported

Wireless: en1: 802.11 a/b/g/n

Battery Health: Replace Now - Cycle count 80

Video Information: ℹ️

Intel HD Graphics 3000 - VRAM: 384 MB

Color LCD 1280 x 800

System Software: ℹ️

OS X 10.10.1 (14B25) - Time since boot: 7 days 3:2:21

Disk Information: ℹ️

TOSHIBA MK5065GSXF disk0 : (500,11 GB)

EFI (disk0s1) <not mounted> : 210 MB

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

Macintosh HD (disk1) / : 498.88 GB (301.81 GB free)

Encrypted AES-XTS Unlocked

Core Storage: disk0s2 499.25 GB Online

MATSHITADVD-R UJ-898

USB Information: ℹ️

Apple Inc. FaceTime HD Camera (Built-in)

Apple Inc. Apple Internal Keyboard / Trackpad

Apple Inc. BRCM2070 Hub

Apple Inc. Bluetooth USB Host Controller

Apple Computer, Inc. IR Receiver

Thunderbolt Information: ℹ️

Apple Inc. thunderbolt_bus

Gatekeeper: ℹ️

Mac App Store and identified developers

Kernel Extensions: ℹ️

/System/Library/Extensions

[not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMControl (3.0.9) [Support]

[not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMData (3.0.9) [Support]

[not loaded] com.ZTE.driver.ZTEUSBCDCACMData (1.3.0) [Support]

[not loaded] com.ZTE.driver.ZTEUSBMassStorageFilter (1.3.0) [Support]

[not loaded] com.bryton.driver.Rider (1 - SDK 10.6) [Support]

[not loaded] com.novamedia.driver.IceraUSB_MSD_Bypass (1.3.0) [Support]

[not loaded] com.zte.driver.cdc_ecm_qmi (1.0.0d1) [Support]

[not loaded] com.zte.driver.cdc_usb_bus (1.0.0d1) [Support]

Launch Agents: ℹ️

[loaded] com.oracle.java.Java-Updater.plist [Support]

Launch Daemons: ℹ️

[failed] com.adobe.fpsaud.plist [Support] [Details]

[loaded] com.oracle.java.Helper-Tool.plist [Support]

[loaded] com.oracle.java.JavaUpdateHelper.plist [Support]

User Launch Agents: ℹ️

[loaded] com.adobe.ARM.[...].plist [Support]

User Login Items: ℹ️

iTunesHelper UNKNOWN Hidden (missing value)

BrytonBridge2 Program Hidden (/Applications/BrytonBridge2/BrytonBridge2.app)

Internet Plug-ins: ℹ️

JavaAppletPlugin: Version: Java 7 Update 71 Check version

FlashPlayer-10.6: Version: 16.0.0.257 - SDK 10.6 [Support]

Default Browser: Version: 600 - SDK 10.10

AdobePDFViewerNPAPI: Version: 10.1.13 [Support]

AdobePDFViewer: Version: 10.1.13 [Support]

Flash Player: Version: 16.0.0.257 - SDK 10.6 [Support]

QuickTime Plugin: Version: 7.7.3

WidevineMediaOptimizer: Version: 6.0.0.12607 - SDK 10.7 [Support]

Silverlight: Version: 5.1.10411.0 - SDK 10.6 [Support]

iPhotoPhotocast: Version: 7.0 - SDK 10.8

User internet Plug-ins: ℹ️

Google Earth Web Plug-in: Version: 6.2 [Support]

Safari Extensions: ℹ️

Norton Internet Security [Cached]

3rd Party Preference Panes: ℹ️

Flash Player [Support]

Java [Support]

Time Machine: ℹ️

Skip System Files: NO

Mobile backups: ON

Auto backup: YES

Volumes being backed up:

Macintosh HD: Disk size: 498.88 GB Disk used: 197.07 GB

Destinations:

Data [Network]

Total size: 2.00 TB

Total number of backups: 94

Oldest backup: 2011-10-03 14:00:42 +0000

Last backup: 2015-01-17 13:47:50 +0000

Size of backup disk: Excellent

Backup size 2.00 TB > (Disk size 498.88 GB X 3)

Top Processes by CPU: ℹ️

4% WindowServer

2% Safari

1% AppleSpell

0% configd

0% notifyd

Top Processes by Memory: ℹ️

206 MB iPhoto

129 MB Mail

103 MB Safari

87 MB com.apple.WebKit.WebContent

77 MB mds_stores

Virtual Memory Information: ℹ️

59 MB Free RAM

1.56 GB Active RAM

1.52 GB Inactive RAM

1.03 GB Wired RAM

3.56 GB Page-ins

35 MB Page-outs

Hope someone will be able to help and guide me through a clean up.