I am building a PC and I have developed a VERY frustrating problem. Sometimes the PC powers up and boots perfectly. However, sometimes the PC will not power up; no POST; nothing. When it acts up here’s the scenario: I flip the power supply switch on in the back, the green light on the MOBO comes on and stays on. Then when I hit the power button on the front of the PC, all the PC lights come on and the fans start to spin for about a second, and then NOTHING. Regardless of whether I hold the button in or just “push and release” the same thing happens – lights and fans for 1 second then NOTHING. The green MOBO light stays on thru the whole thing. The problem is sporadic – most evenings the PC will boot fine. I can work for 3 - 4 hours; I can even cold boot 4 or 5 times during the session and it will boot fine EVERY time. Then the next morning; NOTHING (as described above). Sometimes, if I’m lucky after 10 minutes of hitting the power button it will boot. I have already replaced the power supply thinking I got a bad one; but the problem REMAINED. I have even updated the BIOS because I read of boot problems with XP SP2. That didn’t hurt nor did it help.
I am so frustrated, and I’ve spent days trying to trouble shoot this. I am ready to throw the whole box out the 2nd story window. I hope someone can help me! Thanks!
ASUS P4P800-E Deluxe MOBO (BIOS V 1007)
THERMALTAKE ATX 480W Power Supply
EZ Media 737 Mid Tower Gaming Case
Intel Pentium 4 Prescott 3GHz Socket 478, 1 MB Cache
4x512MB DDR400 PC3200 Memory
Seagate Barracuda 7200.7 160GB SATA w/ 8MB buffer
Radeon 9250 128MB DDR Video Card w/TV-out & DVI