I ran the tests using diskettes. Both memory and HDD tests finished with 0 errors.
I've also installed the ASUS thing. I have no other ASUS software on my computer (asusprobe).
The CMD command returned with the message that everything is fine.
By the way, some while ago I used some driver checking utility built into Windows (not sure it's the same thing you posted) and it immediately threw a BSOD at me. I think it was my videocard driver. I tried the driver check on a different computer and again a BSOD while it has another videocard (both same drivers though).
The other PC had a 6800 I think and I have a 9800 GT.
This was with the Windows 7 RC (64 bit).
So, since the memory and HDD tests succeeded, should I proceed with the driver verifier?