ok, so i recieve this buzzing noise from inside my pc while gaming which i though was that gfx card. that wa xsaround about a week ago when i first heard it (it happens whenever i play games) however the noise had led me to think it was the cpu. i downloaded a program called sensorsview, which tells me the temp of my cpu. for some reason it was telling me the cpu was around 70^C at idle. but now its starting telling me that its -20^c, im really confused and worried whatll happen if i leave it to continue like this. any help would be welcome. Thanks.