Peripherals not working on newly built PC

tomb94 · Jan 26, 2014

Hi Guys,

I have recently built a gaming PC but the keyboard, mouse and monitor are currently not working, i have the USB motherboard wire connected in the USB 1.0 slot, i have also tried the USB 2.0 slot..

The monitor is getting power but only having the orange light..

Any ideas what the cause of this might be and what i can do to fix it?

Thanks!

tomb94 · Jan 26, 2014

Further to this, i have a sapphire graphics card which according to the specs requires a minimum of 500w psu to support, my psu is currently 500w maybe i need a psu with higher wattage?

brarboy · Jan 26, 2014

Did you plug in the 4/8-pin CPU power connector located near the CPU socket?
http://i44.tinypic.com/jtkves.jpg
Also check this whole guide out:
http://www.tomshardware.com/faq/id-1893016/post-system-boot-video-output-troubleshooting-checklist.html
Also check the battery on the motherboard, hope it's not dead

tomb94 · Jan 26, 2014

i have power to the computer so the battery can't be dead.. can it? could i be right about the PSU wattage, i went through all of these steps in your link still no luck.

brarboy · Jan 27, 2014

to check out about your watts psu problem, just unplug your gpu and connect your screen to motherboard port. Let me know if it boots up.

tomb94 · Jan 27, 2014

My motherboard does not have a VGA port on it.. the gpu js powered up and both fans are running. The processor fan is running also.

tomb94 · Jan 27, 2014

I have just ordered a 750w PSU, i guess all i can do is wait and use the process of elimination i just hope itsnot my GPU that cost me a lot of money..

tomb94 · Jan 27, 2014

I have just ordered a 750w PSU, i guess all i can do is wait and use the process of elimination i just hope itsnot my GPU that cost me a lot of money..

brarboy · Jan 27, 2014

Pull and reinstall your DRAM. Still doesn't work?
Unplug psu cable from psu. Clean your ram slots and insert one stick in first slot. Reseat the CMOS battery. By removing it for atleast 5 mins and then reinstalling the CMOS battery. Don't forget to unplug you PSU cable from PSU before removing the battery. Plug the psu cable and start your pc.
Still doesn't?
insert other ram stick in same slot by replacing previous one.
Also get a vga to hdmi connector to plug your monitor to mobo.

tomb94 · Jan 27, 2014

Thanks for your help, i tried to remove the RAM and put in different slots i also tried just one RAM stick, resetting the CMOS bateery didnt help..

brarboy · Jan 27, 2014

tomb94 :

last thing you can do is either check your ram compatibility with your mobo+get a vga to dvi connector to check if your system boots up using your mobo instead of gpu.
If nothing works at all, i suggest you kindly get your motherboard checked, might be a faulty one.

tomb94 · Jan 27, 2014

I have ordered a dvi to vga connector I do not think it is mobo as I sent off to ebuyer and they said it all worked fine. I will await psu to be delivered and let you know

brarboy · Jan 27, 2014

what are your system specs?
i hope i can find more information about your problem.

tomb94 · Jan 27, 2014

1Tb Hard drive
8GB DDR3 Ram 1600 mhz (2 4gb sticks)
Sapphire HD 7850 2GB gpu
AMD fx 6300 3.5ghz processor
Gigabyte GA 970A DS3 mobo

I am sure ram is compatible with mobo becauwe I checked on ram manufacturer site.

thanks so much for your help

brarboy · Jan 27, 2014

tomb94 :

i don't see any Back Panel Connector for your monitor on your motherboard, there won't be any use of connector so you might also inspect the cable you are using to connect your gpu and screen. And the gpu you have stated reqires minimum of 450 watts power.

tomb94 · Jan 27, 2014

But if the dvi/hdmi cable was faulty then why would my other peripherals not work also? I am receiving no power to keyboard or mouse.. I have order a 750w psu which will hopfully solve the problem..

brarboy · Jan 27, 2014

tomb94 :

ok just check with your new psu. If the problem still doesnt work out, Indications are still that your mobo can be faulty.
See a conversion here:
http://www.justanswer.com/computer/4bp04-monitor-mouse-keyboard-not-working.html

brarboy · Jan 27, 2014

Also i found this info somewhere, see if it helps:
(1) Turn off the computer.

(2) Remove all the external peripherals like PSU, keyboard, Flash drives, etc.

(3) Press and hold the power button for 30sec which releases the static on the computer (if any).

(4) Put back the PSU and try turning on the computer.

tomb94 · Jan 27, 2014

That convo is interesting.. sounds like it could be the mobo. When you say remove the psu do you mean just remove the power cable?

brarboy · Jan 27, 2014

tomb94 :

yeah just detach the cables, not to remove from cabinet

tomb94 · Jan 29, 2014

I tried all of the above tests still no luck.. psu didnt resolve the problem. So I guess I should buy another motherboard?

brarboy · Jan 29, 2014

tomb94 :

just go to service center and get it checked once before you apply for new mobo. There can be minor fault too which could save your money. If its major fault then you better off with new mobo

tomb94 · Jan 31, 2014

The new mobo didnt solve the problem.. still no power to my peripherals monitor in power saving mode. Can someone please help with this??

brarboy · Jan 31, 2014

Have you checked with other monitor cable for display?
In my second pc, my mobo is gigabyte ga945gcm-s2l. In bios there is an option under 'Integrated Peripherals'
"USB Keyboard Support" & "USB Mouse Support"
I think you would have them in your mobo bios too. And they must have been disabled(By default).

tomb94 · Jan 31, 2014

Ive tried with a dvi and a hdmi cable.. ok so resettong the CMOS should do it..?

Peripherals not working on newly built PC

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