Computer has black screen and no hard drive activity, graphics card fan not spinning but case and psu fans are. Please help!

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suicidaldogx

Commendable
Sep 15, 2016
2
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1,510
Hi

Recently I bought a Dell Dimension E521 off of a friend of ours as I had decided to update it. That booted up at first, but the fans spun slowly to start with, then became extremely faster until it shut off. The PC stopped working altogether, even though all of the components was installed correctly, including the CPU. I had concluded the main board had ether been fried or I had received it faulty. I decided to give it another try so I bought another board off of eBay, thinking it should work now. So I rebuilt the computer up thinking it would be easy and quick, but after installing everything it showed no picture, no POST and with only the case fan spinning (which acts kind of as the CPU cooler with the heat sync with this Dell) with none other activity apart from the PSU fan spinning with no hard drive activity also. I have tried multiple moniters. I really now don't have a clue what could be the problem, if you could help me ASAP that would be really great. Also it has a yellow light on the motherboard and the front of the case.

Specs:

500W ACE PSU
DDR2 RAM (8gb)
AMD Athlon x2 7750 Black Edition
Dell Dimension E521 Desktop Motherboard UW457
750gb Seagate Barracuda
SAPPHIRE RADEON R7 240





Thanks :) -suicidalDogX
 
Solution
Rapajez
Considering your PSU is in the Tier 5, "Do No Use" category here: http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html

I'd guess that's your issue. It's possible the original mobo was fine, and that it was just the PSU from the beginning.

Not everyone has a spare PSU lying around to isolate the issue, but there are some guides online to troubleshooting a faulty PSU. You can also just re-seat all of the PSU connections, and verify the R7 240 has a 6/8-pin adapter plugged in (if it needs one).

Not sure if that has on-board graphics, but you can try removing the graphics card, and booting with the monitor plugged into the mobo--if that's an option.
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Rapajez

Rapajez

Distinguished
Jul 17, 2014
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Considering your PSU is in the Tier 5, "Do No Use" category here: http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html

I'd guess that's your issue. It's possible the original mobo was fine, and that it was just the PSU from the beginning.

Not everyone has a spare PSU lying around to isolate the issue, but there are some guides online to troubleshooting a faulty PSU. You can also just re-seat all of the PSU connections, and verify the R7 240 has a 6/8-pin adapter plugged in (if it needs one).

Not sure if that has on-board graphics, but you can try removing the graphics card, and booting with the monitor plugged into the mobo--if that's an option.
 
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Solution
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suicidaldogx

Commendable
Sep 15, 2016
2
0
1,510
I will try a different PSU as soon as I can, I didn't think it could have been that and I wasn't aware PSUs could be dangerous. Thanks for telling me. I will keep you dated to see that changing the PSU resolved my issue :)






Thank you for helping me

 
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