It's a dollar part that on some machines when it gets too low won't let the machine boot.
When the RAM and video card is out, does the machine beep in protest on power up? (no need for keyboard, display or drives for this test.)
Bob
I have an Intel E6550 Dual which is 7 years old. It's been setting around for about 6 months and now the monitor won't turn on. I bought a new Video card, tried 2 monitors with 2 different connections, took the RAM out and re-seeded it. The power supply turns on. So is there something else I can try or that I'm missing. Otherwise I will just junk it but wanted to post before I did.

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