I was thinking about getting a SSD but can't really afford it right now and to be fair I would rather fix this problem because it was working fine a few months ago.
Here's a Hijackthis log:
Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 07:40:46, on 16/02/2012
Platform: Windows 7 SP1 (WinNT 6.00.3505)
MSIE: Internet Explorer v9.00 (9.00.8112.16421)
Boot mode: Normal
Running processes:
C:\Program Files (x86)\Renesas Electronics\USB 3.0 Host Controller Driver\Application\nusb3mon.exe
C:\Program Files (x86)\Mozilla Firefox\firefox.exe
C:\Program Files (x86)\ASUS\AI Suite II\ASUS Mobilink\iPhone Simulator\pnSvc.exe
C:\Program Files (x86)\Mozilla Firefox\plugin-container.exe
C:\Program Files (x86)\ASUS\AI Suite II\AsRoutineController.exe
C:\Program Files (x86)\ASUS\AI Suite II\TurboV EVO\TurboVHelp.exe
C:\Program Files (x86)\ASUS\AI Suite II\EPU\EPUHelp.exe
C:\Program Files (x86)\ASUS\AI Suite II\AI Suite II.exe
C:\Program Files (x86)\ASUS\AI Suite II\Sensor\AlertHelper\AlertHelper.exe
C:\Program Files (x86)\ASUS\AI Suite II\DIGI+ VRM\VRMHelp.exe
C:\Program Files (x86)\Trend Micro\HiJackThis\HiJackThis.exe
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page =
http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL =
http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL =
http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page =
http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page =
http://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\Windows\SysWOW64\blank.htm
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: YouTube Downloader Toolbar - {F3FEE66E-E034-436a-86E4-9690573BEE8A} - C:\Program Files (x86)\YouTube Downloader Toolbar\IE\4.9\youtubedownloaderToolbarIE.dll
F2 - REG:system.ini: UserInit=userinit.exe,
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Increase performance and video formats for your HTML5 <video> - {326E768D-4182-46FD-9C16-1449A49795F4} - C:\Program Files (x86)\DivX\DivX Plus Web Player\ie\DivXHTML5\DivXHTML5.dll
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files (x86)\Java\jre6\bin\ssv.dll
O2 - BHO: URLRedirectionBHO - {B4F3A835-0E21-4959-BA22-42B3008E02FF} - C:\PROGRA~2\MICROS~3\Office14\URLREDIR.DLL
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre6\bin\jp2ssv.dll
O2 - BHO: YouTube Downloader Toolbar - {F3FEE66E-E034-436a-86E4-9690573BEE8A} - C:\Program Files (x86)\YouTube Downloader Toolbar\IE\4.9\youtubedownloaderToolbarIE.dll
O3 - Toolbar: YouTube Downloader Toolbar - {F3FEE66E-E034-436a-86E4-9690573BEE8A} - C:\Program Files (x86)\YouTube Downloader Toolbar\IE\4.9\youtubedownloaderToolbarIE.dll
O4 - HKLM\..\Run: [NUSB3MON] "C:\Program Files (x86)\Renesas Electronics\USB 3.0 Host Controller Driver\Application\nusb3mon.exe"
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-19\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'NETWORK SERVICE')
O4 - HKUS\S-1-5-20\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'NETWORK SERVICE')
O4 - HKUS\S-1-5-21-3348802811-2971528483-89966618-1003\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'UpdatusUser')
O4 - HKUS\S-1-5-21-3348802811-2971528483-89966618-1003\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'UpdatusUser')
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~2\MICROS~3\Office14\EXCEL.EXE/3000
O8 - Extra context menu item: Free YouTube to MP3 Converter - C:\Users\Ross\AppData\Roaming\DVDVideoSoftIEHelpers\freeyoutubetomp3converter.htm
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O18 - Filter hijack: text/xml - {807573E5-5146-11D5-A672-00B0D022E945} - C:\Program Files (x86)\Common Files\Microsoft Shared\OFFICE14\MSOXMLMF.DLL
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: ASUS Com Service (asComSvc) - Unknown owner - C:\Program Files (x86)\ASUS\AXSP\1.00.13\atkexComSvc.exe
O23 - Service: ASUS HM Com Service (asHmComSvc) - Unknown owner - C:\Program Files (x86)\ASUS\AAHM\1.00.13\aaHMSvc.exe
O23 - Service: ASUS System Control Service (AsSysCtrlService) - Unknown owner - C:\Program Files (x86)\ASUS\AsSysCtrlService\1.00.11\AsSysCtrlService.exe
O23 - Service: @%SystemRoot%\system32\efssvc.dll,-100 (EFS) - Unknown owner - C:\Windows\System32\lsass.exe (file missing)
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: KMService - Unknown owner - C:\Windows\system32\srvany.exe
O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: NVIDIA Display Driver Service (nvsvc) - Unknown owner - C:\Windows\system32\nvvsvc.exe (file missing)
O23 - Service: NVIDIA Update Service Daemon (nvUpdatusService) - NVIDIA Corporation - C:\Program Files (x86)\NVIDIA Corporation\NVIDIA Updatus\daemonu.exe
O23 - Service: PC Tools Startup and Shutdown Monitor service (PCToolsSSDMonitorSvc) - Unknown owner - C:\Program Files (x86)\Common Files\PC Tools\sMonitor\StartManSvc.exe
O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing)
O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%SystemRoot%\system32\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.exe (file missing)
O23 - Service: Soluto PCGenome Core Service (SolutoService) - Soluto - C:\Program Files\Soluto\SolutoService.exe
O23 - Service: @%SystemRoot%\system32\sppsvc.exe,-101 (sppsvc) - Unknown owner - C:\Windows\system32\sppsvc.exe (file missing)
O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)
O23 - Service: @%SystemRoot%\system32\vaultsvc.dll,-1003 (VaultSvc) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%SystemRoot%\system32\vds.exe,-100 (vds) - Unknown owner - C:\Windows\System32\vds.exe (file missing)
O23 - Service: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing)
O23 - Service: @%SystemRoot%\system32\Wat\WatUX.exe,-601 (WatAdminSvc) - Unknown owner - C:\Windows\system32\Wat\WatAdminSvc.exe (file missing)
O23 - Service: @%systemroot%\system32\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.exe (file missing)
O23 - Service: @%Systemroot%\system32\wbem\wmiapsrv.exe,-110 (wmiApSrv) - Unknown owner - C:\Windows\system32\wbem\WmiApSrv.exe (file missing)
O23 - Service: @%PROGRAMFILES%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing)
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End of file - 7916 bytes