Why do I have to alway spend more money to fix a Windows new release. I upgraded from Vista 64 to Windows 7 64 and KEEP having to download and fix several software and hardware things. BUT i still keep getting the Blue Screen warning and reboot RANDOMLY. is it the NVIDIA 9100 video driver (upgrade it 2 times) or is it CHKDSK dont see a fix for that yet. sill looking for a patch. I have a HP 4core 6720y