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No display, keyboard or mouse.

Last response: in Systems
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February 1, 2013 5:36:13 PM

Hi there,

My screen went blank and my keyboard mouse stopped working a few days ago.


I tried restarting my PC and I had no display, keyboard or mouse yet the PC seemed to start up okay.

I replaced the 7850 with an old graphics card and the PC now works fine.

Is the problem my graphics card as it would seem or is it my motherboard because I don't want to replace the card if the problem happens again.

Thanks.

More about : display keyboard mouse

a b U Graphics card
February 1, 2013 5:46:29 PM

full spec? does it have integrated graphic?
a b U Graphics card
February 1, 2013 5:48:58 PM

Blank screens and other asorted motherboard problems can be caused by bad PSUs. So the best way to know is to test the PSU or replace it.
Related resources
February 1, 2013 5:51:08 PM

rgd1101 said:
full spec? does it have integrated graphic?


Spec in my signature. The motherboard does have integrated graphics but I don't have right cable for it.
February 1, 2013 5:53:41 PM

Chicano said:
Blank screens and other asorted motherboard problems can be caused by bad PSUs. So the best way to know is to test the PSU or replace it.


I don't think it's the PSU if everything works fine when an old card is used and also the fan does spin on the 7850 when it's plugged in.
a b U Graphics card
February 1, 2013 6:15:16 PM

That's the general conception but spinning fans only mean they can work with low available power. The PSU may be delivering insufficient power to work the Graphics Card which btw are known to consume a good deal of the supplied power. The obvious question; Is the old card lower power than the 7850?.. my gues is it is... and if so, your results would be expected. One thing is for sure, any of both PSU or GPU is the cause.. so testing both is the only way to know.

How Do I Know if My Video Card is Bad?
http://www.brighthub.com/computing/hardware/articles/50...

How to Check the Power Supply With a Multimeter
http://www.ehow.com/how_4896858_check-power-supply-mult...
a b B Homebuilt system
a c 201 U Graphics card
February 1, 2013 7:49:40 PM

make sure your mb bios is up to date may be a bios bug.
!