I have had 4 BSODs in an hour whilst trying to do an AV scan (Kasp.) I hope the sreenshot will enable you to point me in the right direction. This is poss conected to a previous post last week (although in 'Hardware')

[recovering disk space - old attachment deleted by admin]What is the blue screen error message?Windows had to close etc... 0x000000F4, 0x0000000000000003, 0xFFFFFA800534FB30, & that's all I was ABLE to copy. I have unchecked auto restart and so will have get it to BSOD again to get all the codes. AlexmaYour A/V is obviously killing a process needed to run Windows. Can you attach a dump from C:\WINDOWS\MINIDUMP?Download BlueScreenView
No installation required.
Double click on BlueScreenView.exe file to run the program.
When scanning is done, go EDIT>Select All.
Go File>Save Selected Items, and save the report as BSOD.txt.
Open BSOD.txt in Notepad, copy all content, and paste it into your next reply.STOP Error 0x000000F4: CRITICAL_OBJECT_TERMINATION

Sounds like LSASS, CSRSS, or one of the other low-level Windows components is infected.Sorry about the delay in responding. The PROBLEM was resolved after finding I had  a faulty HDD. I installed a new drive and reinstalled Win 7. I then ran the Seatools utility which found 47 errors on the drive and REPAIRED them. So now I have a spare GOOD 250gb drive! Hindsight is a wonderful thing.....(but costly!) Many thanks to all who contributed solutions. Alexma Quote from: alexma on April 29, 2010, 04:15:32 AM

So now I have a spare good 250gb drive!