Computer turns on but no display!

September 24, 2015 at 07:10:36
Specs: Windows 10, AMD 8350
I was just recently cleaning out my computer the other day.
When I was done with getting all of the dust out I rebuilt it and so on.
I went to turn it on and was greeted with absolutely nothing on the screen.
The computer turns on and all my hardware spins up but nothing appears on screen.
I am not sure if it is the Cmos battery or something and I am not sure on what to do.
If you have any questions then I will answer them right away! Thank you and have a great day!

message edited by SleepingCorn


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#1
September 24, 2015 at 07:20:03
When you rebuilt the machine did you enssure you inserted the graphics card correctly? also if the GPU requires additional power have you ensure you have installed the correct power to it?

Do you hear any beeps when you switch the machine on?

Also can you please details all your specs


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#2
September 24, 2015 at 08:22:17
It won't be the CMOS battery.

As given, check all connections, including those to the monitor. Often a tiny movement of a card can cause it to move its edge connectors onto an area with oxide on it (about invisible). Clean you graphics card edge connectors with a soft pencil eraser then pop it in and out a few times to ensure the oxide is cleared off the socket too.

Same can happen to any edge connectors including RAM and SATA HD power and signal connections.

EDIT:
You have posted on XP forum but your specs say Win 10 - which is it?

Always pop back and let us know the outcome - thanks

message edited by Derek


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#3
September 24, 2015 at 08:24:05
Yes I did make sure that I placed it in correctly and that I have enough power, I have an 8pin and 6pin attached to it. There were no beep codes either.

My specs are
OS- Windows 10
CPU- AMD 8350 8core
GPU- Gigabyte GTX 970
Ram- Standard 8gb 1600
Motherboard- ASRock 990 Extream3
HDD- 320gb Western Digital Blue
PSU- Corsair 700W not-modular
My machine was running fine since December with no problems of 2014

message edited by SleepingCorn


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Related Solutions

#4
September 24, 2015 at 08:26:09
So like pencil eraser will clean off any oxide that could be interfering with the connection?

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#5
September 24, 2015 at 08:34:23
If it's edge connector trouble yes. It can often rear its ugly head after a very slight disturbance.

Always pop back and let us know the outcome - thanks


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#6
September 24, 2015 at 08:42:16
Can't you start up a computer without a gpu?, but the resolution will be very low. And if there is dust in the ram slots could that be a problem with the no display?

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#7
September 24, 2015 at 09:38:46
I think you mean Display Card. You won't see anything on the screen without this unless you have internal graphics and switch to them. Without a GPU (chip) you will see nothing.

It's not so much about dust in slots as "oxide" which causes almost imperceptible dulling of the edge connectors. Best bet is to clean them and see if it helps. I've been caught that way too many times so tend to get it out of the equation if there is no other obvious cause.

Always pop back and let us know the outcome - thanks


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#8
September 24, 2015 at 10:13:51
So if I do the white eraser trick and it does not work then it is likely to say that my RAM is bad?

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#9
September 24, 2015 at 20:54:06
Bad ram, even no ram, will usually elicit a beep code and you say you're getting no beeps.

Either you did some damage while inside the case--maybe you zapped something--or you didn't get it put back together right. Did you remove or try to remove the cpu heatsink and fan assembly? Often the paste dries or they use thermal tape instead of paste and the cpu gets stuck to the heatsink so much so that if you pull on the heatsink you'll pull out the cpu. Just think for awhile about everything you did while cleaning it out and something may occur to you.


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#10
September 25, 2015 at 08:58:39
My Computer was beeping before because of the CPU but I bent the pin back into place so the beeping stopped, How would I be able to tell if the CPU is dead. I may have shocked it while cleaning it... Would the computer turn on with a dead CPU?

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#11
September 25, 2015 at 21:38:53
The power to the fans and drives is separate from the motherboard even though they're all powered from the same PSU. They will usually spin up even if there's a problem with the motherboard.

If the bent pin was part of what just happened I'd check it again. As cpus have gotten more sophisticated they've crammed more and more pins in the same amount of space. They're now so small and so close together it's really hard to straighten them out by hand. But if a bent pin was the problem and you definitely got it straightened and there's no others that way then the cpu ought to be OK.

You also need to make sure the cpu heatsink is installed correctly.


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#12
September 26, 2015 at 05:26:39
So I might have a problem with my motherboard?

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#13
September 26, 2015 at 06:27:56
Why would you tear apart a computer to clean it? All that's usually necessary is to blast the dust out using compressed air & possibly a soft bristle brush for stubborn areas.

Since you mentioned a bent pin, you apparently damaged the CPU when you removed it. Why you removed it is beyond me because there's nothing to clean. You obviously had to remove the CPU cooler to get at the CPU so when you re-installed it, did you reapply thermal paste & apply it correctly? No paste = no boot.

This is wrong: http://www.hal-pc.org/journal/2009/...

This is right: http://cdn.overclock.net/5/56/56108...

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#14
September 29, 2015 at 12:51:15
How exactly did you "Clean out" the computer?

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