Mother Board Problem?

[Ryan Hahn]

Hello Gents,

I am having very weird crashes on my PC. My games will randomly crash on me, my web browsers will crash on me, and when i try restarting my PC it will not boot. The lights comes on but refuses to boot, until I manually press the power button until it turns off and then ill reboot it. Sometimes I must repeat that process a couple times before it will boot. According to my manual I hear one beep at startup, I believe it is saying my keyboard is not detected or something because my keyboard will not light up if my pc fails to boot but my mouse will.
I have already ran memtest and another test for my graphics card and they both ran fine without any problems. Could this be a mother board problem?

Hardware-

Antec 750w (current gamer i guess its called)
Asus M5A88-V EVO
EVGA GTX560
16 gig ram

 

[o1die]

Overclocking either the cpu or gpu? Do you have any case fans?

 

[Ryan Hahn]

Overclocking either the cpu or gpu? Do you have any case fans?

I have the GPU boosting and CPU over clocking turned off, when they were on it was giving me BSOD. With it off I don't have that problem anymore. I have 3 fans

 

[PanicMaster85]

it sounds like you have a bad motherboard, or a bad psu... do these steps

#1 run memtest again, i know you already did it just i want you to run it for a couple of hours and see if you get even a single error
http://www.memtest.org/

#2 test for overheating parts, though unlikely it is still possible, run y-cruncher to stress your cpu and core temp to monitor temps... run that for about a few hours.
http://www.numberworld.org/y-cruncher/
http://www.alcpu.com/CoreTemp/

#3 run burnintest, this will test for fault components
http://www.passmark.com/download/bit_download.htm

#4 check your cpu for any bent pins... the bend pins could be on your motherboard as well if you have an intel cpu,

#5 update your bios, this is extremely important and should be done carfully with appropriate information, if you go to fast and make a mistake you could theoretically brick your motherboard which is never good
http://www.tomshardware.com/forum/308518-30-update-bios

#6 try another psu, see if one of your friends can let you borrow a psu to try and see if its your psu thats causing the problems,

#7 test for viruses, though it is unlikely it is possible that this is what is causing the problems, run Superantispyware in safe mode... here are a few links to help you doing this(also i really trust superantispyware their free trial is great and it got 3 trojan viruses for me last time i ran it in safe mode)
http://www.superantispyware.com/
https://www.youtube.com/watch?v=AnuZUHNutwE
^
after you have done the steps in teh video to boot in safe mode remember once the scan is done revert those changes done in msconfig to boot back into regular windows, if you do not do that you will just boot into safe mode time after time again because of the how msconfig is actually forcing you to boot in safe mode.

Hope this helps!

P.S. remember this may not fix your computer but it will narrow what is wrong with it, personally if the new psu does not work i would recommend RMAing your motherboard.