For my Dell XPS M1330 laptop: It seems that about one in four times that I run a full system scan with Eset Smart Security 4, it will hit a certain point in the scanning process where my computer will eventually blue screen (usually toward the end of the scan process around 89% complete). I have tried determining if this is hardware or software - I have swapped with a known good hard drive and known working RAM and numerous clean OS installs of Windows 7 Professional x64. Yet I have continued to run into this intermittent issue. So I think it is safe to say it is not a hardware issue. I have tried numerous clean OS installs as well, but I still have this issue. Can any advise on what I can do?