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Pc Wont Boot Up


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#1 shocking

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Posted 18 May 2006 - 02:52 PM

Hi there need some help, have approx 2 yr old pc that i built and installed windows myself, last few times it came on made a number of bleeps then came on, but sometimes it wouldnt come, its now refusing to beep at all and is not powering up monitor, checked hard drive and graphics card also monitor. could it be chip or board any help would be appreciated, by the way i have ckecked all the cables.
Thanks :thumbsup:

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#2 HitSquad

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Posted 18 May 2006 - 03:43 PM

Hi shocking.
Sounds more like a power supply issue.
Are any of the fans spinning, including the power supply fan itself?
Does the HD indicator light illuminate?
Mainboard light? Anything?

#3 DaveM59

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Posted 18 May 2006 - 03:45 PM

Many possibilities here. Please provide the following info:

Motherboard
CPU
Memory (all specs including number of modules installed)
Graphics card
Hard drive(s)
Optical drive(s)
Power supply (model, wattage, amperage specs for +12V, +5V, +3.3V)

How did you check the hard drive and graphics card? Hard drive is not needed for a mobo to POST but graphics card is.

(Edit) Sorry HS we posted at the same time. Shocking -- I agree with HS power supply is the prime suspect.

Edited by DaveM59, 18 May 2006 - 03:53 PM.


#4 shocking

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Posted 19 May 2006 - 12:14 PM

Power supply is fine, hard drive spins. there is a red led on motherboard thats on constant, the board is NF24-ALH N-vidia cant find box so thats whats on board, its AMD Athlon 2.6G. there are 3 strips of 250 MB ram mem, G/card worked in another machine. i think maybe board or chip is bust but not sure how to check.
Thanks for your responses

#5 shocking

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Posted 19 May 2006 - 12:16 PM

Sorry the fans spin as well, pretty much every thing is working but monitor not coming on. that ive tested on another pc also.

#6 HitSquad

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Posted 19 May 2006 - 02:28 PM

I'd start working backwards.
Remove all peripherals except moitor first.
Disconnect all drives but the HD. Swap out HD data cable at the same time - test on both ide's.
Remove all add-on cards but the vid - test. If it's pci, move to a different slot.
Get the mem chips down to one at a time, rotate and test.
In short, get it down to bare bones (mainboard, cpu, vid ,ram and HD) one step at a time, testing along the way.
If you still have no luck, keep going until you're down to just ps, board, cpu.
You should start recieving some beep codes at that point.
If you don't, it's one of the three. If you do, you've got a different problem.
A PS on the way out can be a flaky item. Work sometimes, sometimes not or just plain low output and enough to be deceiving. It's something you still need to eliminate from the final three.
If you haven't already done all this, get back when you can and let us know.

Edited by HitSquad, 19 May 2006 - 02:39 PM.


#7 shocking

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Posted 20 May 2006 - 01:23 PM

Thanks i will try what u said and let u know, your help is much appreciated.

#8 shocking

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Posted 20 May 2006 - 01:52 PM

Hi, down to power supply, board and cpu but no beeps. think it might be time or a few new bits, lol.

#9 DaveM59

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Posted 20 May 2006 - 08:02 PM

Not to insult you but you _do_ have the case speaker connected to the motherboard don't you?

#10 shocking

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Posted 21 May 2006 - 02:37 AM

Yes ive even tried a different 1, as i thought it might not be working.

#11 DaveM59

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Posted 21 May 2006 - 07:31 AM

Well then the only thing I can add to what Hit Squad told you is to try a "basic build" out of the case -- put the mobo on a sheet of plastic or cardboard. That would eliminate the possibility that your mobo is shorting out against the case somewhere. If still no beeps then it's time to try subbing in your remaining three, starting with the power supply.




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