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Windows 7: Motherboard change. Won't boot up

16 Sep 2011   #21
DeaconFrost

Windows 7 Ultimate x64 SP1
 
 

I would agree with essenbe. Even if other components were bad, like memory, it should still POST.


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17 Sep 2011   #22
mimmi7280

Windows 7 Ultimate x86
 
 

So I took the motherboard, connected the wires from a different PSU and installed the processor, fan and a stick of ram. I turned it on and still got the same result with blank display and no POST. I'm trying to get the motherboard replaced

(And yes, the VGA connector is set properly lol)
My System SpecsSystem Spec
17 Sep 2011   #23
Lebon14

Windows 7 Home Premium x64 SP1
 
 

I got the same problem 1 week or so ago where fans would spin up, LEDs in the case light up b ut there was nothing else. In my case, it was the PSU going bad. If you have an extra PSU, I would try it.
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17 Sep 2011   #24
essenbe

Windows 7 Enterprise X64/Windows 10 Enterprise X64/Windows 10 Pro X64/Linux Mint
 
 

mimmi, If this was a new PSU or a known working one, I would recheck my steps to make sure everything is right, and if it dosen't start, I would take the motherboard back an get another one. Sorry about this, but It seems that is what the problem is.
My System SpecsSystem Spec
17 Sep 2011   #25
alphanumeric

Windows 10 Education 64 bit
 
 

When you swapped out the motherboards did you make sure all the mounting posts matched up with the holes in the new motherboard. You also want to make sure there isn't one hidden underneath that didn't line up with a hole that may be shorting out a track on the motherboard. You could even try powering up with the motherboard removed from the case. Shorting the two power button header pins "momentarily" with a small screwdriver will simulate pressing the power button. Just rest the motherboard on a non conductive surface.

EDIT: Something else to look at is the back panel cut out on the case. The ones I have that come with my motherboards have grounding tabs that project out and contact the sides of the motherboard USB jacks etc. If you are not careful when installing your motherboard, one or more of the tabs could actually end up sticking in the USB port and shorting it out.
My System SpecsSystem Spec
18 Sep 2011   #26
mimmi7280

Windows 7 Ultimate x86
 
 

So the people in the shop tested out the motherboard and It worked. So the only thing now could be the PSU (The motherboard was tested away from the case by me and still didnt work). I asked the power rating of the shops PSU and they said it was 500W. And the power supply I used had a rating of 450W as PEAK/MAX Power and 230W As REAL power.
My System SpecsSystem Spec
18 Sep 2011   #27
alphanumeric

Windows 10 Education 64 bit
 
 

If it was me I think I'd be looking for a new better rated power supply.
My System SpecsSystem Spec
18 Sep 2011   #28
essenbe

Windows 7 Enterprise X64/Windows 10 Enterprise X64/Windows 10 Pro X64/Linux Mint
 
 

mimmi, when the people in the shop tested it out, what PSU did they use?
My System SpecsSystem Spec
20 Sep 2011   #29
mimmi7280

Windows 7 Ultimate x86
 
 

Could this be an issue with the RAM? I have now tried 3 PSU's, tested the processor and the motherboard.
My System SpecsSystem Spec
21 Sep 2011   #30
alphanumeric

Windows 10 Education 64 bit
 
 

Quote   Quote: Originally Posted by mimmi7280 View Post
Could this be an issue with the RAM? I have now tried 3 PSU's, tested the processor and the motherboard.
It worked OK in the shop with that RAM didn't it? have you tried it with a brand new sufficiently rated power supply?
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 Motherboard change. Won't boot up




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