no power after i turned on my desktop

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Chris8900

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Dec 21, 2013
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10,510
my desktop showing no power no lights, no fan, no beep, no everything., i already troubleshoot my PSU by using paper clip and it was working fine., i also did used screw driver to turned on my desktop and still no signs of light .,., im afraid my mobo is dead., hopefully not.,.,

any elp guys very much appreciated., TY
 
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Titan
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May 18, 2007
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The "paper clip test" only proves that your PSU is not completely busted.

The output voltages can still be out of tolerances and the PSU can also be failing to maintain regulation during turn-on when loads are attached. The only two ways to definitively rule out PSU as the cause is to try a known-good PSU or measure outputs with an oscilloscope to make sure all PSU outputs actually behave correctly when under load.

Some PSUs, particularly the "tier-5" brands/models like Diablotek have a reputation for killing computer components but still "working" after the fact. People repair their PC and then their new components mysteriously fail again, and again, and again until the PSU finally grants the courtesy of killing itself and putting an end to it.
 
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Chris8900

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Dec 21, 2013
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10,510
i just found out the problem,. the video card is the culprit., when i removed the vcard my desktop turned on and everything is working fine., but when i put back again my vcard on the pci e slot., try to turned it on no power again., so which means that my vcard is dead???

 
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InvalidError

InvalidError

Titan
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May 18, 2007
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Or the GPU could still be fine and your PSU has become too weak to turn on when the GPU is plugged in.

Both scenarios are possible unless you are 100% confident in your PSU or have tried with a definitively known-good PSU and get the same no-boot issue with the GPU in, normal boot without..
 
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Chris8900

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Dec 21, 2013
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when i tried to used different video card with no 6pin connector my mobo is working fine,. but when i tried to switch to my main vid card with 6pin problem occurs again., i dont think my 650 watts PSU cant handle it., but i will try to other pc if the problem still exist, if it does, the vcard is dead meat.,
 
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Chris8900

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Dec 21, 2013
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it says vortex maybe thats the brand.,
what if i will try to reflow my vcard by baking it with oven toaster for 10mins., maybe that would fixed the problem.,
i will update you later.,
 
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Chris8900

Honorable
Dec 21, 2013
13
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10,510
ok here's what i did i used my gt220 dead vid card to checked if i can power on my dekstop and it did everything was working fine. even the fan of gt220 was spinning, but with no display bcoz it's dead.,

but with using my main vid card which is ati radeon 3850 HD it's causing my pc to show no power at all.,no lights, no fans spinning on 3850, aswell as the mobo, no beep, no everything.,

so what do u think guys? it could that my 3850 is dead or conflicting with the Mobo or PSU.,
 
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InvalidError

InvalidError

Titan
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May 18, 2007
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Regardless of whether the GPU is dead or not, you probably still want to upgrade the Raidmax PSU to something more reliable before putting a new GPU in and risk blowing it up as well assuming your 3850 is dead. As said earlier though, it could also be that your old Raidmax PSU is simply failing to provide enough power to boot with the 3850.
 
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