I followed these instruction, and after the GMER scan had been running about 2 hours, not yet complete, I got the BSOD. The error message was IRQ_NOT_Less_Or_Equal. I restarted but windows would never start up past the initial screen. Finally I was able to boot it in Safe Mode with Networking but could not get on the net to message you. So I did an F8 start and chose Last Known Configuration and it started. The Defogger program is still on my desktop, but I am very reluctant to run the scan. I did get my first Bing "fail" and it said something like the search is making too many calls. It cleard up in a moment. I am wondering if this copy of windows is so corrupt I should abandon it and reinstall?