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Old 09-26-2009, 04:24 AM   #11 (permalink)
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Default Re: Computer power working, but won't boot

So have you tryed removing the ram and Video? these can prevent booting if they are defective.
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Old 09-26-2009, 03:06 PM   #12 (permalink)
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Default Re: Computer power working, but won't boot

Yep, both. Results don't seem to change.
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Old 09-26-2009, 03:10 PM   #13 (permalink)
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Default Re: Computer power working, but won't boot

no beeps from the motherboard when the ram is not installed? Do you have a motherboard speaker?

If it is working it should go crazy on you.
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Old 09-26-2009, 03:35 PM   #14 (permalink)
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Default Re: Computer power working, but won't boot

No beeps from the motherboard. Is there a way to toggle it on and off?
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Old 09-26-2009, 03:46 PM   #15 (permalink)
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Default Re: Computer power working, but won't boot

nope you either have a speaker or do not.
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Old 09-26-2009, 05:11 PM   #16 (permalink)
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Default Re: Computer power working, but won't boot

My dad had this problem and I advised him to flip the switch on the back of the power supply off for about 10 seconds then back on. His computer booted again just fine but some do not. Try that and if all else fails, get a new PSU.
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Old 09-27-2009, 02:48 AM   #17 (permalink)
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Default Re: Computer power working, but won't boot

Already swapped the PSU (see a few posts back). Didn't seem to help anything; I'm pretty sure it must be the motherboard although I'd really like to know what caused it to fail, it's only about a year old.
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Old 09-27-2009, 03:10 AM   #18 (permalink)
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Default Re: Computer power working, but won't boot

pull it from the case and try to run it in case it got grounded some how. Check it for burned out capacitors.
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Old 10-04-2009, 12:20 AM   #19 (permalink)
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Default Re: Computer power working, but won't boot

So I've pulled the motherboard from the case and still same problem. Fans seem to work and the green light goes on (the motherboard) when I swith on the I/O switch at back of psu. No burned capacitors or visible signs of wear that I can see. Still a mystery...it's an Asus PB5 ATX775, can't find any info on whether or not this particular MB has an internal speaker and there's no mention of it in the manual. It's dead silent when I fire it up with no RAM so maybe that's a telling sign
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Old 10-04-2009, 03:17 AM   #20 (permalink)
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Default Re: Computer power working, but won't boot

I do not see a speaker on your board but t does have connectors for one of the front panel connectors.

http://dlcdnet.asus.com/pub/ASUS/mb/.../e2620_p5b.pdf page 56

If you case has one you can connect it. If not you can get one for a couple of dollars.
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