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Huw
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« on: August 10, 2010, 08:43:00 pm » |
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Emma's computer. OK guys I think I need some extra input. I agreed to take a look at what's wrong with Emma PC and it's got me a little foxed. When you switch on the PC the fans spin up and 3-4 seconds later the PC shuts itself down. It doesn't get to the POST screen - it's shut down before then.
Thermal shut-down? I doubt it. All the fans - case, PSU and CPU all spin up fine. So what else is there? Faulty PSU is all I can think of which might come up with this kind of behaviour - but my gut feeling is that the PSU is fine. The PC is a few years old so I'd expect a PSU to be more likely to blow completely instead of developing some esoteric voltage fault. Motherboard failure? Possible I guess.
Any ideas? Jim? Azzy? Julian?
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The hunter that chases two rabbits catches neither one.
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Liam
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« Reply #1 on: August 10, 2010, 09:19:10 pm » |
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I had a similar problem with my parents Dell last year, and that turned out to be a PSU fault.
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When all else fails, refer to the manual
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Leon
Seki special
Peasant
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Posts: 18
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« Reply #2 on: August 10, 2010, 10:17:47 pm » |
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Have you tried resetting the BIOS? taking the battery out and putting it back in?
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"Cry in dojo, and Laugh in the battlefield" - Miyamoto Musashi
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Huw
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« Reply #3 on: August 11, 2010, 07:15:40 am » |
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It doesn't get as far as loading the BIOS - it's powered itself down before getting that far. I *think* the logic is that the motherboard immediately detects a serious problem and powers down the PC before anything of substance runs. Missing voltage from the PSU (or a strange motherboard fault) looks like being the 'prime suspect'.
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The hunter that chases two rabbits catches neither one.
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Azzy_Stealth
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« Reply #4 on: August 11, 2010, 10:58:04 am » |
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Had a few problems similar to this before.
1)Turned out to be the graphics card. So changed it over and it was ok
2)Some dodgy ram but the computer beeped twice before shutting itself down
Does it beep?
or can you boot it if you let it cycle through the first start and shutdown and press the power up again straight after?
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My Mission
To Break Ribs and Kick Asss !
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Huw
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« Reply #5 on: August 11, 2010, 11:40:11 am » |
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No beeps. It doesn't get that far before shutting down!! A dead or faulty graphics card should produce 8 beeps IIRC. I have a spare PSU at home so I think I'll give that a go first.
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The hunter that chases two rabbits catches neither one.
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JimmyTheHoover
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« Reply #6 on: August 11, 2010, 11:20:22 pm » |
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Defo sounds like the PSU to me Huw...
Jim
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The Longest Journey Begins With A Single Stumble.....  RouterTech.org - The Site for all things Networking ! Spam this e-mail address - we need spam for research: givemespam99@yahoo.co.uk |
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Liam
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« Reply #7 on: August 16, 2010, 09:10:30 am » |
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So what was the outcome in the end?
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When all else fails, refer to the manual
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Huw
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« Reply #8 on: August 16, 2010, 10:36:57 am » |
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PSU. I swapped it out for my spare one on Friday and it all seemed to work fine afterwards. Haven't had confirmation from Emma yet though.
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The hunter that chases two rabbits catches neither one.
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