This may be long. Since very late March I have had 3 BSODs. The first time I thought nothing of it, since I had had 2 or 3 before, all so sporadic I ignored it. Then early April I had another. I tested my hard drive and it was fine, and I tested my RAM, and found one or two bad sticks. I removed them and things seemed fine. Then a couple days ago I got another one. This time I used a program called BlueScreenView and it highlighted Ntoskrnl.exe in red, so that is probably the offending file. I unfortunately have been deleting all my minidumps with CCleaner, but I have disabled that now. The reason I ask if Prevx could be causing them is because I have installed that, ZoneAlarm, Firefox 4, and the Iron browser since right before April, and the last 3 BSODs were all when browsing online. So is it Prevx, or Firefox, or could it still be hardware?