I have been having cooling problems with my computer which I found was attributed to too much thermal paste. After spending the day tweaking my cooling, I turned the system back on and loaded the bios to check temps. Great, system idles at 45 with all fans on max, and at 52 with all fans on low. I restart the system and let it go into XP. It fails and I get a BSOD with an Unmountable_boot_sector error. I pop this into google on a friends computer and get a microsoft webpage that explains this as a built in error, and to run chkdsk /r. I do this but now the system runs, right up until that black and white screen right before windows loads. It shows a status indicator at the bottom. The system locks on this screen and then shows a message that a file is missing and reports it as windowss/system32/config/system. I am guessing that running chkdsk screwed something up. Is there a way to fix this or am I screwed and have to reinstall windows?