My computer is shutting down weirdly
From last 2-3 days I'm facing a problem with my desktop.
I have installed WinXP and Linux on my machine. After starting the machine, if I start using Linux, it works fine. But if I go to WinXP, I open any .exe or any .pdf file or any setup or something. My machine shuts down. Means it doesn't displays any message and else but CPU fan stops rotating, monitor turns off. I have to switch off the power supply, again connect it and then only I can reboot the machine, otherwise it doesn't boots up even.😡
Can anyone please help me????