Bsod at startup - driver or Bios or Win7 reinstall?

Oh no ... I was happy too early
BSOD again (when driver verifier deleted)
Restart/freeze (when it is turned on)
So it's not the soundcard/driver which causes that.

Hi,

I continued with hardware test, HDD especially, and I could not find the support website for that (neither on Seagate page). My HDD is Samsung SV4012H. I want another test after Hard Disk sentinel (it was OK) because chkdsk showed some errors: "...attribute record corrupt". How can I make the test for this HDD?

Thanks

I made the Seatools test (smart check, short self test, short and long generic) and all of them were passed.
(I don't understand why the HDD is shown twice the same in 2 rows and only the partition "C", the other partition "F" is nowhere.)
So it means that HDD is OK?

Please help me!

No desktop at the moment - no icons, tray or start menu, no right click just blank light blue screen.
I tried to switch on explorer.exe but no result. I made chkdsk and sfc/scan but remained the same.
I am just browsing by add new task of task manager.
So I decided to go back to WinXP from Win7 but how should I do (I think backgrade is not allowed)?
Thanks

Seagate Seatools was the reason for no desktop!
I made a system restore by uninstalling it and now it's OK with the desktop.