Info: I was receiving BSoDs after start-up (sometimes after few minutes of normal use). So I went to the appropriate forum and started debugging. The problem is that now my computer runs really slow and Task Manager shows that I'm using 100% CPU. Why would this be? it was not running slow before I started debugging. The only alterations I've made have been: to reinstall my Wireless USB Adapter, which seems to be causing a BSoD when connected to a network (but that being dealt with elsewhere) set my cd-drive to 1st bootable in BIOS download, extract, burn memtest to disc and attempt to run (still have not got memtest to work) download/install HD Tune download/install HD Diagnostic Tool any ideas will be appreciated.