Hardware Power and GPU fan on - No signal

Sop

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Hey I recently got a used PC to restore, everything seems to be working except for the fact that there is no signal to the monitor.
 

Coconuts 500

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That could definitely be anything, but is most of the time a faulty motherboard, in my (quite large, I used to work with this sort of thing) experience. Best of all would be a loose connection somewhere. Disconnect everything (wires, cards, RAM sticks), then reconnect. Remove all unnecessary hardware. Go with just the motherboard, CPU, RAM, PSU and video card. Try another video card. Go with just one RAM stick - then another (if you have one).

If it still doesn't work, it's almost certainly the motherboard (because the CPU is very, very unlikely to fail).
 

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That could definitely be anything, but is most of the time a faulty motherboard, in my (quite large, I used to work with this sort of thing) experience. Best of all would be a loose connection somewhere. Disconnect everything (wires, cards, RAM sticks), then reconnect. Remove all unnecessary hardware. Go with just the motherboard, CPU, RAM, PSU and video card. Try another video card. Go with just one RAM stick - then another (if you have one).

If it still doesn't work, it's almost certainly the motherboard (because the CPU is very, very unlikely to fail).

dont have another video card
i cant remove anything because it's a hp case put together with these stupid ass rivets
 

trumpet-205

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dont have another video card
i cant remove anything because it's a hp case put together with these stupid ass rivets
Well do you know the model number of that HP? You still not providing much info about the system.

In any case, start with the simple one. Remove CMOS battery on the motherboard. Wait for 10 minutes, then put it back. This'll rest the BIOS.
 
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Sop

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ok. so the pc is a hp pavillion elite m9180a from 2008 *how much do you think I would be able to sell this thing for?

http://h20000.www2.hp.com/bizsuppor...portFAQ&prodSeriesId=3644723&prodTypeId=12454

removing cmos battery didnt do anything useful

i noticed there was a disconnected cable on the gpu, is that supposed to be plugged in?


DSCN0263.JPG
 

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Sop

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I meant decent ones. Try to stay still while doing it and put some light in there.
(No offense, but I honestly can't see anything.)

i can see fine. the reason the background is black is because it's on top of my keyboard.

the black and white cable
 

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Looks around for a spot on the mobo for that. Isaac, the cables are soldered IIRC on the case's end. Also, his computer boots, but the GPU's not sending a signal.

Sop Try disconnecting the GPU and boot with onboard video.
 

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When my friend had attempted to air clean his computer, he removed a few simple components, and when he attempted to restart it, there was no display, sort of as you mention. I had racked my brain over it for a few hours before finding out the culprit. He had attempted to clean the CPU fan and heatsink, as it was impossible to do without removing it, but the CPU had such a large amount of old thermal paste that he did not attempt to remove it (He also did not have any new thermal paste). He had just stuck it back in the socket and put it back on. I eventually took everything out and it turns out that the CPU was put on incorrectly and it bent a few pins, so I fixed them by using a very tiny regular screwdriver, popped it back in, and it booted up normally. I'm not entirely sure why his motherboard did not POST or beep for a CPU error, as it simply ran the exhaust fan, CPU fan, and graphics card as if everything was alright, but did not display anything on the monitor after trying the on-board video aswell as the graphics card.

I'm not saying this is the solution, but just something to look in to, as I found it interesting that the computer was acting as if nothing was wrong.

His computer was an HP p9600 or p8600 or something..
 

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