Thank you all for your time, I got bsod every time I tried to install a new AV and do a prescan. After a while I searched and many places in the net told that the Gygabite App Center sometimes create this, so I uninstalled it, andthe BSOD stopped when using AV, but my pc got very slow. I atm followed a thead here for malware removal, and detected 3 instances of Win32/Bundled.Toolbar.Google.D with Eset Scan online, I am waiting for an answer for eliminating them in the other thread, but want to check if the hardware have something to do with the bsod. So any help there? Thanks for your help, this site is REALLY a godsend for me