I am currently having a problem on Windows 2000. In the normal condition, after starting off the OS, it will appear the memory count down screen, and then it will show the desktop screen. My problem is after the memory count down screen, then the desktop screen will be showing out, but after a while, my PC will "black-out", which it reboots again and go back to the memory count down screen. This kind scenario lasts for 3 times per time of using the PC. This problem happened since last two months. Is there any solution to overcome this problem? Much appreciate if you could advise me on it as far as possible.