When I turned on my new computer, which had been working perfectly for about 10 days, it froze up as it was loading an item in my startup menu. Had to hit reset, after which it started with a long beep followed by 3 short beeps, and no video. The screen stayed black as the computer went through its boot sequence, floppy, CD, and hard drive lights flashing, and I could hear Windows starting to load. Then the computer just turned itself off. Tried this a few more times with the same result. The monitor is all right because I'm using it now with my old computer. The new computer has an Abit lx6 motherboard, a Pentium 300, 128 megabytes memory. It has a Diamond Viper video card. It was running windows 98 with absolutely no problems until this. What should I do?