Safari faulty after removing adware virus

I stupidly found myself downloading Mackeeper by mistake and screwing up my Macbook pro (old one, 10.7.5 I think, bought in January 2012). However, after searching on Apple discussions I managed to remove all the adware and Mackeeper remnants using a programme called AdwareMedic. BUT, since then, my computer has been still very slow, and Safari (which is particularly slow) won’t remember any of my preferences. For example, I ask it to keep my homepage as http://www.bbc.co.uk - and it keeps this in my preferences list - but never ever starts up Safari with that particular website. Only ever shows my list of favourite websites, and I can’t seem to clear those. I also did a Disk Repair check using Disk Utility and it tells me my disk is damaged - possibly as a result of the adware - but I don’t seem to have any sort of in-built recovery (OS Recovery) software on my computer to enable me to fix it. Lots of problems! But the first thing I’d like to sort which is affecting me on a daily basis is the Safari problem. Thank you in advance!

I have run an Etrecheck in case that's helpful

treCheck version: 2.2 (132)

Report generated 5/7/15 1:06 PM

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

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

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

Hardware Information: ℹ️

MacBook Pro (13-inch, Late 2011) (Verified)

MacBook Pro - model: MacBookPro8,1

1 2.4 GHz Intel Core i5 CPU: 2-core

4 GB RAM

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 = Normal - Cycle count = 179 - SN = W0146A3K2D3BA

Video Information: ℹ️

Intel HD Graphics 3000 - VRAM: 384 MB

Color LCD 1280 x 800

System Software: ℹ️

Mac OS X 10.7.5 (11G63) - Time since boot: 0:41:0

Disk Information: ℹ️

TOSHIBA MK5065GSXF disk0 : (500.11 GB)

disk0s1 (disk0s1) <not mounted> : 210 MB

Macintosh HD (disk0s2) / : 499.25 GB (401.15 GB free)

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

MATSHITADVD-R UJ-8A8

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. MacBook Pro

Kernel Extensions: ℹ️

/Applications/ExpressVPN.app

[not loaded] expressvpn.tap (1.0) [Click for support]

[not loaded] expressvpn.tun (1.0) [Click for support]

/Library/Extensions

[loaded] foo.tap (1.0) [Click for support]

[loaded] foo.tun (1.0) [Click for support]

Startup Items: ℹ️

tap: Path: /Library/StartupItems/tap

tun: Path: /Library/StartupItems/tun

Startup items are obsolete in OS X Yosemite

Launch Daemons: ℹ️

[loaded] com.adobe.fpsaud.plist [Click for support]

[loaded] com.microsoft.office.licensing.helper.plist [Click for support]

User Launch Agents: ℹ️

[loaded] com.adobe.ARM.[...].plist [Click for support]

[failed] com.apple.CSConfigDotMacCert-[...]@me.com-SharedServices.Agent.plist [Click for details]

User Login Items: ℹ️

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

AdobeResourceSynchronizer Application Hidden (/Applications/Adobe Reader.app/Contents/Support/AdobeResourceSynchronizer.app)

Internet Plug-ins: ℹ️

FlashPlayer-10.6: Version: 17.0.0.169 - SDK 10.6 [Click for support]

QuickTime Plugin: Version: 7.7.1

AdobePDFViewerNPAPI: Version: 11.0.10 - SDK 10.6 [Click for support]

Flash Player: Version: 17.0.0.169 - SDK 10.6 [Click for support]

AdobePDFViewer: Version: 11.0.10 - SDK 10.6 [Click for support]

SharePointBrowserPlugin: Version: 14.4.9 - SDK 10.6 [Click for support]

XStandard: Version: Unknown [Click for support]

Silverlight: Version: 5.1.30317.0 - SDK 10.6 [Click for support]

JavaAppletPlugin: Version: 14.9.0 - SDK 10.7 Check version

3rd Party Preference Panes: ℹ️

Flash Player [Click for support]

Time Machine: ℹ️

Time Machine not configured!

Top Processes by CPU: ℹ️

2% WindowServer

1% fontd

1% ps

0% WebProcess

0% aosnotifyd

Top Processes by Memory: ℹ️

139 MB Safari

123 MB WebProcess

123 MB Finder

78 MB mds

37 MB WindowServer

Virtual Memory Information: ℹ️

1.65 GB Free RAM

2.35 GB Used RAM

0 B Swap Used

Diagnostics Information: ℹ️

May 7, 2015, 12:25:33 PM Self test - passed

May 6, 2015, 08:07:33 PM /Users/[redacted]/Library/Logs/DiagnosticReports/BluetoothAudioAgent_2015-05-06 -200733_[redacted].crash

May 6, 2015, 07:46:04 PM /Users/[redacted]/Library/Logs/DiagnosticReports/WebProcess_2015-05-06-194604_[ redacted].crash

May 5, 2015, 09:59:47 PM /Users/[redacted]/Library/Logs/DiagnosticReports/BluetoothAudioAgent_2015-05-05 -215947_[redacted].crash

May 4, 2015, 09:17:04 PM /Users/[redacted]/Library/Logs/DiagnosticReports/BluetoothAudioAgent_2015-05-04 -211704_[redacted].crash

May 4, 2015, 09:16:04 PM /Users/[redacted]/Library/Logs/DiagnosticReports/BluetoothAudioAgent_2015-05-04 -211604_[redacted].crash

May 4, 2015, 09:09:48 PM /Users/[redacted]/Library/Logs/DiagnosticReports/BluetoothAudioAgent_2015-05-04 -210948_[redacted].crash