I was just checking my PC temperture with HWInfo and it says the MCP is 90C. I then checked this on Nvidia system monitor to confirm it and it said the same thing. I recently bought a geforce gts 250, and installed a 500W PSU.
I might be wrong but there is a small heatsink near the bottom of the motherboard, that is shaped to allow the PCIe graphics card to fit.
Is this heatsink on the MCP?
And what should I do about the high temperature. I have taken the big fan out of my old PSU, and stuck it on the inside of the cases side grill, and attached it temporarily to the floppy drive power lead. This is obviously not enough. Do you think the heat sink could have been damaged somehow, or is not stuck on properly?
I don't know how long this has been going on, and am not sure whether it has started since using the new card and PSU.