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Monitor will not display

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IRISKS

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Jun 20, 2018
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#1
So I recently installed a new cooler onto a friend's CPU, and all of a sudden there is no signal on the computers display.

The video card's fan is spinning as it should be, as the six pin is connected to it. The new cooler is also powered and the fan for that is also spinning. There is no beeping to indicate loose components.

Things to note:

- Being the complete idiot I am, I forgot to remove the plastic on the cooler and the thermal paste, as I was trying to rush things too much. The cpu, as you would imagine, overheated and pc shut down. I then repeated the cooler with the plastic removed and paste applied correctly.

- I have tried connecting this PC to my own monitor, using my own HDMI lead, which both do definitely work. No result. So I'm thinking it is not the wires nor is it his monitor that is the problem, and instead it is something internal, but I can't figure out what the problem is.

- I have plugged the HDMI into both the on-board and video card slots.

- The motherboard only has one Video card so I couldn't try another one.

- The video card I believe is a R7 260X 1GB Sapphire model.

- The CPU is an A8-6600k AMD.

- The new cooler is a masterair G100M.

- His monitor was connected to his PC via DVI cable.

Any help will be greatly appreciated it's getting to the point where I'm running out of options. I havent provided many details about the components as im not sure what most of them are. The main point to note is that before, the components were indeed working, so there can't have been a comptatibility error before. Thank you.
 

DOUGIE

PCHF Member
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Jun 1, 2017
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#2
Have you checked the boot order in the Bios?
I have had the boot order change, when working on Computers.
Are you getting a blinking cursor at all on the monitor?
 

IRISKS

PCHF Member
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Jun 20, 2018
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#3
Have you checked the boot order in the Bios?
I have had the boot order change, when working on Computers.
Are you getting a blinking cursor at all on the monitor?
I'm not getting any signal at all I'm afraid. Just confirmed wires and monitor are perfectly fine however. I haven't checked anything to do with BIOS however, how would I go about doing this?
 

Rustys

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Jul 22, 2016
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#4
Have you tried re-seating the Video Card?
Removing the Video Card and see if the on-board works?
Made sure the power for the Video card was connected correctly?
Tried using the DVI?
 

IRISKS

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Jun 20, 2018
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#5
Have you tried re-seating the Video Card?
Removing the Video Card and see if the on-board works?
Made sure the power for the Video card was connected correctly?
Tried using the DVI?
Tried reseating the card, blowing etc. No change. Tried without the video card at all with the HDMI into monitor and the dvi into monitor, both whilst card was out, no display. Even though the motherboard is powered (green light, etc) maybe it is dead? Even so, how could that have happened?
 
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phillpower2

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Sep 9, 2016
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#7
Did the computer normally give out a single beep once it had passed the power on self test (POST).

Can you post the brand and model name or number of the motherboard, the same for the power supply + how many sticks of RAM there are.
 

IRISKS

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Jun 20, 2018
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#9
Did the computer normally give out a single beep once it had passed the power on self test (POST).

Can you post the brand and model name or number of the motherboard, the same for the power supply + how many sticks of RAM there are.
I don't believe it did. It's not mine though so not entirely sure. There's 1 stick of 8gb RAM, brand 'Crucial'? DDR3. (Looks like fairly cheap RAM)

Power supply is G550M cooler master Bronze semimodular I believe.

Motherboard is ASUS A88XM-A Micro ATX.
 

phillpower2

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#10
Try the RAM in each one of the slots.

Reason why I asked about the beep was because of the following in your OP "There is no beeping to indicate loose components."
You will not get any error beeps unless there is an onboard speaker and sorry to say that to reduce costs most boards do not ship with one as standard :confused:

I never do a build without fitting an onboard speaker as they are invaluable if troubleshooting is required, see how you get on with this in the short term but if at all possible see if you can get your hands on a speaker as in the attachment below.
 

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IRISKS

PCHF Member
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Jun 20, 2018
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#11
Try the RAM in each one of the slots.

Reason why I asked about the beep was because of the following in your OP "There is no beeping to indicate loose components."
You will not get any error beeps unless there is an onboard speaker and sorry to say that to reduce costs most boards do not ship with one as standard :confused:

I never do a build without fitting an onboard speaker as they are invaluable if troubleshooting is required, see how you get on with this in the short term but if at all possible see if you can get your hands on a speaker as in the attachment below.
Oh I see. There is on-board speakers and such, there was a point where the RAM was loose, and then it began to beep, but I fixed this by securing the RAM and fitting it properly, so I can be sure there is no beeping. Should have mentioned this already, my bad.
 

phillpower2

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Sep 9, 2016
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#13
With the computer disconnected from the wall socket;

Press the power on button for 20 to 30 seconds to get rid of any residual charge in the MB.

Take off the side of the case and remove the RAM, add on video card and the CMOS battery (see attachment).

Connect the screen to the appropriate video port on the MB.

Replace the CMOS battery.

Connect the PSU to the wall socket.

Power up the computer while there is no RAM in the MB to see if you get any error beeps.

Post back with an update for us.

Tip

If using a computer and not a mobile phone, please avoid adding multiple posts while waiting for us to reply to your last, edit your last post to include anything that you wish to add, this will ensure nothing gets overlooked which can sometimes happen if a thread has more than one page.
 

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Bruce

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#14
just checking....
you installed a new CPU cooler with the plastic guard still on, then the CPU overheated and the PC shutdown.
is there molten plastic shorting out pins somewhere?
 

Rustys

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#16
just checking....
you installed a new CPU cooler with the plastic guard still on, then the CPU overheated and the PC shutdown.
is there molten plastic shorting out pins somewhere?
If it is on the pins it is in the socket as well. If that is the fact then replacing you shall go.
My guess, most likely have bent pins as well.
Even worse broken off in the CPU Socket.
 

gus

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#17
Bearing in mind what you have done to date perhaps it may be advisable to take the computer to a repair shop to have the issue professionally diagnosed and or fixed.
 
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