I built my machine myself approximately 2 or 3 years ago, and I have recieved the same BSOD as this post, >> techspot.com/vb/topic72477 << I checked for the files peterdiva suggested, and neither were found on my system. I have no firewalls on, and I uninstalled Norton as suggested in the beginning of the post. I then installed AVG and Comodo (Comodo did nothing, empty folder in my c drive and nothing to uninstall in add / remove... now I use ZoneAlarm, because Comodo will not let me reinstall b/c i need to remove it in add/remove...) Anywho, ran AVG antivirus, and nothing was found. No rootkits were found either (completed the 12 steps). "Interesting new development. I have now found out that when I activate the wireless networking via my laptop, the desktop computer, which is directly attached to the DSL modem, crashes. This is the same desktop which gives me the BSOD on other occasions." (quoted from mentioned post) I am in an appartment with 6 of my friends, directly connected to the router, with other people directly connected as well, and wirelessly connected. No other computer has the same problem as mine. Not sure if this has any relevence (doubt it) but I wanted to make this part clear.