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| | #16 |
![]() Join Date: Apr 2007 Location: Reading, Berkshire
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Rep Power: 17 ![]() ![]() ![]() | Okay, this is really bugging me now - even out of the case, I can't get either the old or new motherboards to boot! At one point, the old one booted and gave a two-tone error sound (kind of like a Police car, twice) - sadly this error tone isn't listed among the POST beeps on Intel's web site. The tests which I have done to date are: swap RAM, processor, power supply (by running two PCs side-by-side, stretching the wires from one case to the other), test the CPU and RAM in a different PC, remove the board from the case completely, turn it on then immediately remove the power switch jumpers. What test have I missed out? I will try pretty much anything now, however random it might seem! Can someone please tell me what on God's green earth is wrong with this damn PC?!?! |
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| | #17 | |
![]() Join Date: Sep 2007 Location: Leigh on Sea
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Rep Power: 0 ![]() | Quote:
seriously i've had this Nick and it turned out to be the power supply | |
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| | #18 |
![]() Join Date: Jan 2008 Location: Surrey
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Rep Power: 0 ![]() | The siren beep sounds to me like a CPU temperature warning, so it may be worth making sure its properly seated, the fan's powered and the heat sink's secure. My first thought was that the memory was shorting, but if you've tried both some old and new memory sticks in the board then that's not likely. You could try taking the RAM out completely and trying to at least cause memory beeps. If you get no beeps then its something serious on the board, if you do get beeps then its something to do with the RAM. I'd say to strip the board down to the bare essentials, and use a known good power supply, processor and single RAM stick. If it still fails to even POST, just take off the components, find out which ones work, and chuck the board itself. |
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| | #19 |
![]() Join Date: Jul 2006 Location: South Yorkshire
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Rep Power: 51 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | In the past I've assumed it's the motherboard but I've since learned that even though the PSU may have appeared to have survived, one or more of the power rails has not gone without damage. As a rule of thumb in something like this a PSU replacement is pretty much mandated otherwise you run the risk of blowing yet another board with bad power. That said, sounds like you've already gone that route and at a guess the fact that the PSU survived enough is an indicator that it passed on a lot of damage to the other components from RAM on down to HD and motherboard.. I'd ditch it and start over. |
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| | #20 |
![]() Join Date: Apr 2007 Location: Reading, Berkshire
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Rep Power: 17 ![]() ![]() ![]() | @unclebenny - CPU temperature is possible, as the CPU fan wasn't seated correctly but that wouldn't kick in the very second I turn it on, would it? Surely it would take it a little while to get hot enough for it to be a problem?? @contink - sadly, I think you're right. I'm wondering if the PSU is damaged but still able to supply enough power to turn on, and I've gone and stuffed board no.2 as well.... |
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| | #21 |
![]() Join Date: Jul 2007 Location: Middle-Wales
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Rep Power: 5 ![]() | On my 1st day I had a similar issue, PC wouldn't fire and none of the POST beep codes it gave were the same, I decided to try the PSU before declaring anything else dead and lo and behold, she fired |
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| | #22 |
![]() Join Date: May 2007 Location: Salford
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Rep Power: 5 ![]() | We had a similar problem last week.... We ordered in a new motherboard and the problem didn't go away. Turned out it was actually the PSU, which was strange. Give it a try! |
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| | #23 | |
![]() Join Date: Jul 2006 Location: South Yorkshire
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Rep Power: 51 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | Quote:
I, in turn, learned that "I told you so" still got you a clip round the ear even though I was right... or as my father later said when apologising, especially for being right! Anyways, as a result I always change the PSU first after a spike to ensure he doesn't get on the blower to return the favour | |
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| | #24 |
![]() Join Date: Jun 2006 Location: Dorset
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Rep Power: 7 ![]() | Have you taken a Voltmeter to the PSU to check everything is reading ok? - Darn sight quicker than replacing it just to check. http://www.clunk.org.uk/forums/guide...ing-guide.html |
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| | #26 |
![]() Join Date: Apr 2007 Location: Reading, Berkshire
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Rep Power: 17 ![]() ![]() ![]() | It is an RM PC, but not that old, less than 2 years. Its the only problem of this nature which we've had, so I think it more likely that the power cut hurt it rather than the board itself. |
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| | #28 |
![]() Join Date: Apr 2007 Location: Reading, Berkshire
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Rep Power: 17 ![]() ![]() ![]() | I would be tempted to write off a 4-year-old PC if it developed this fault too, but I'm less inclined to do that for a >2-yr-old one. |
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| | #29 |
![]() Join Date: Jun 2006 Location: Dorset
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Rep Power: 7 ![]() | If it's less than 2 years old, don't you have hardware warranty? |
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