Well, must be the motherboard

Asus Essentio cg5270-bp003 midsize deskt...
August 6, 2010 at 18:31:47
Specs: Windows Vista, 2.85 ghz 4gb DDR2
Well, like others, I am having the startup problem. My monitor will not work and my keyboard will not turn on. It will not go to bios or even give the bootloading confirmation beep. I'm pretty sure it's not a powersupply problem......evident because I just bought a powersupply and hooked everything back up.

I've also taken ever piece of hardware off and reinstalled it to factory standard. There are no burns (As I know how to take everything apart and put it back together properly) and still nothing. I've tried bit piecing everything. Starting with essentials only and plugging in one at a time. Still the same problem. It's not a video card problem, CPU problem, or any other component of such importance. Which brings me to my motherboard.

I'm 99.9% sure it's a motherboard problem. I've run diagnostics with seperate, fully compatible systems with all installed hardware on other machines. Everything worked and after checking drivers, everything checked out. Another clue would be that my warning light is still green. Hasn't changed orange or red on powering my PC. I know that most PCs with such lights will not turn any other color unless there is an attached piece with a problem.

I'm going to venture a guess and say motherboard. Any thoughts?

See More: Well, must be the motherboard

August 6, 2010 at 19:24:23
If there is no post beep, the problem is probably NOT the RAM, video, HDD, optical drives, etc. It's either the CPU, power supply or motherboard.

You didn't bother to list the specs of the new PSU or the old one for that matter, so we have no idea what you're working with. Do you know what to look for when choosing one? Did you at least test the old one 1st? Insert a jumper wire from the green pin to any black pin, then fire it up. If the fan spins, it's *probably* still good. You should then test voltages with a multimeter to make sure they're within tolerance. If you're sure the PSU is good, test the CPU before running out & buying a new board.

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August 6, 2010 at 19:25:09
Post some specs on the system. Especially the new power supply. Give model numbers.

Was the system working previously?

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