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Computer won't turn on

QueBert

Lifer
A Co-Worker is having troubles with her computer, so I said I'd take a look at it. She told me her Uncle told her the PSU was bad, she bought a new one and when you press the power button nothing happens (PSU fan doesn't even spin) I told her I thought it was the MB, which was my best guess without really getting into the system. So she ordered a new MB off Newegg. I put it in for her, when I press the power button nothing.

I checked the CPU, the core doesn't have any cracks on it, and there are no burn marks around it. It's an Athlon XP 2600+. I've built tons of PC's and don't remember ever having a problem where the PSU wouldn't go on due to a bad CPU. I know it's not the PSU because I've tried 2 brand new ones, it can't be the MB because I've tried 2 (the original, and the one we ordered from Newegg)

What else could be causing this? Been awhile since I've had a problem where a PC totally wouldn't turn on.

 
Could be something as simple as the button on the case not closing the circuit properly and triggering a power-on. Try shorting the pins on the motherboard that the power button connects to with a small screwdriver and see if it turns on.

I like to use this trick when building a new rig just to make sure it POSTs before I go through the hassle of mounting everything inside the case. That way if there's a bad mobo you don't have to go unscrewing everything all over again.
 
Originally posted by: sykopath79
Could be something as simple as the button on the case not closing the circuit properly and triggering a power-on. Try shorting the pins on the motherboard that the power button connects to with a small screwdriver and see if it turns on.

I like to use this trick when building a new rig just to make sure it POSTs before I go through the hassle of mounting everything inside the case. That way if there's a bad mobo you don't have to go unscrewing everything all over again.

I was just thinking the same thing this morning, crazy how something so simple can slip my mind 🙁 I know it's not the MB, the PSU, and I can't think of anything besides a bad switch that could cause this. thanks for reminding me 🙂
 
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