Computer keeps restarting in bios

[wasdlmb]

Hi, i recently built my second computer, but can not get it to run. every time i turn it on, it runs for a few seconds, and then seems to restart itself. most of the time it gets to the screen were it displays the motherboard name, but sometimes it never even sends video single. please help.

specs:

Case: Antec Three Hundred

MoBo: ASRock 970DE3/U3S3

PSU: LOGISYS Computer PS550ABK

CPU: AMD Phenom II X4 965

RAM: G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3

HDD: Western Digital Caviar Blue WD5000AAKX 500GB

DVD: SONY Black SATA DVD-ROM Drive Model DDU1681S-0B - OEM

OS: win 7 64 (not installed yet)

 

[teh_gerbil]

Have you cleared the CMOS?
Have you double checked all the PSU cables are plugged into the mobo?
Have you tried unplugged EVERYthing, but 1 stick of RAM, PSU and CPU into mobo and see if it boots?



(I know you've already made one, but if i had a dollar for every stupid mistake I shouldn't have made due to experience i'd be a very rich man.)

 

[wasdlmb]

Have you tried unplugged EVERYthing, but 1 stick of RAM, PSU and CPU into mobo and see if it boots?

i just did and it still will not boot(i didn't unplug the gpu because the mobo does not have onbord graphics).

Have you double checked all the PSU cables are plugged into the mobo?

5 times

Have you cleared the CMOS?

just tried it, didn't work

thanks anyways

 

[teh_gerbil]

What about JUST mobo + power.

Does it have an onboard buzzer, or are there headers on the mobo for a buzzer?

most modern mobo's don't have a buzzer, I feel this one doesn't. Source one and listen for the beeps!

Edit: just googled it and indeed, no buzzer. You need to source one.

 

[wasdlmb]

You need to source one.

what? and how?

What about JUST mobo + power.

i will have no way of telling if that works if i do that, but the gpu was just working 2 days ago in my previous build.

 

[teh_gerbil]

Look at your mobo manual, according to ASROCK, your internal chassis speakre header is number 26 which is situated beneath your power LED header.

there will be a + and a -, you need one of these from your local computer store, plug it in, and if the mobo has error it will buzz the appropriate error code for you to decode. If it's silent, then it's a buggered motherboard and it will need replacing.

 

[wasdlmb]

pluged in the buzzer and it didn't post, turned the plug around and my computer worked perfectly, i have no idea why. thanks for all your help

 

[wasdlmb]

Best answer selected by wasdlmb.

 

[teh_gerbil]

Yay!! Excellent news. Thanks man.