I have a Pentium 4 3.0Ghz system built-up from an Intel D865PERL desktop board. This past week has been a nightmare I've had 3 to 4 unrecoverable abrupt system shut-down crashes where I had to do a full C drive format, repartition, BIOS clear, then reinstall Windows XP Professional, and then all my programs one by painstaking one. After 3 days and 3 nights I got it back to where was before. Then it would lose the DVD-RW drive and SCSI Syjet 1.5GB removable harddrive. I recently installed an Evercool WC-202 watercooler kit in it, but have'nt had any problems with until yesterday the same time the DVD drive would go dead and dissappear from My Computer, the fans in the watercooler would stop. Its pump and LCD screen would stay working however. Weird! I pulled the side panel off and jostled/wiggled the Molex "Y" splitter power cables, and everything returned to normal if I held the cables in certain positions by twisting them. Must be an intermittant short or bad connection in one of the 2 of them or both that trips-out the power supply. With this last sudden shut-down crash, the motherboard's OEM utility program Active Monitor, and the Intel Desktop Control Center stopped working correctly. The one gave an error messege that my board had no sensors. Did one of these crashes fry the board's on-board temp/fan/voltage sensors? I arrived at the conclusion that the "Y" Molex cables need replacing. I would appreciate any feedback from any of you. I read similar postings, and realize I'm not the only one having this problem. My Motherboard is still under warranty from Intel, I just dread having to tear my system apart, and be depressed/computer-less while waiting for the replacement board to arrive.