I have a P III, 1Ghz CPU, with Intel original 82815 motherboard and 128 MB Ram. My problem is that my computer suddenly turns off in the midst of some activity, like say playing a game or running a presentation. While the power led and the hard disk turn off the keyboard stills has its Num Lock etc. leds glowing. Even the led on the motherboard keeps glowing. To be able to work again I need to switch off the mains power and again switch on the computer. This has led to loss of unsaved data on several ocassions. Please help.