My recently home-constructed Iwill KK266plus-R system has been quite abruptly spontaneously turning itself off and restarting lately, for no apparent reason. The shutdowns occur during no particular usage of the machine or with any pattern. The system simply turns off right in the middle of something, usually turning itself immediately back on (essentially as if I hit the reset switch.) My initial suspicions were that I had an inadequate power supply (250w), however before I ran out and bought a new one, I thought I'd ask if anyone here had similar problems. Specs are: Iwill KK266plus-R w/ 950mhz Athlon (currently running on a 100mhz bus) 3dfx Voodoo3 3000 AGP 16MB 128 MB SDRAM Two hard drives, one 40 GB 7200 rpm, one 4 GB 5400 rpm DVD-ROM, Floppy, Keyboard, Optical Mouse, Monitor, On-board sound w/ speakers, network adapter Any help is appreciated!