Lol must be heat then at those temps you could fry an egg on it lol,Try a couple of case fans not expensive and can lower the temp no end,if that fails another cpu fan will cost about 12 quid for a massive thing that would cool my bedroom lol.
My problem - which appears to have been the same as yours - is now sorted! Here is the chain of events: Windows 98 boot disc used to re-format hard drive. Windows XP installed, alongwith all updates etc. Latest version of Stinger installed, which found blaster worm. virus erradicated but windows still locking when connected to internet, but only doing so when I wasn't actually at the terminal eg on Friday afternoon/evening I was on the computer for three hours, but as soon as I left it runninh unattended it froze within two minutes. I have solved this problem by playing music from the hard-drive in the background. Machine now runs, unattended, with no freezes, as it is always active. Hope this helps
Before using MBM or any other temperature monitoring programme, check with the author's website for a list of chipsets/motherboards that it is compatible with. There are a lot of different temperature monitoring chips fitted to mobos nowadays, if you use the wrong programme, you get nonsense results.
I`ve seen this before, the way I got round it was go to display properties, advanced, click tab "trouble shooting" and untick box, "write combining" you won`t notice a difference, but this has cured problems on PCs with freeze problems.
give it a try, you can always change this option back.