Computer turns on for a split second

[sobe123454]

Hello, when i go to turn on my computer my computer turns on for a split second then turns off. The fans light up everything goes on then just turns of and when i go to click the power button again it wont turn on.. I also ordered a new power supply and plugged everything in and it still does the same thing.. I have been using this computer for 3 months with no problem and it just happened now..

Specs:
Athlon x3 processer
gtx 460
GIGABYTE GA-78LMT-S2P AM3+
8 gb patriot ram ddr3
750 gb hdd
and this power supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817339036

 

[christop]

I would send that psu back. Don't cheap out on apus you will regret it when it dies and takes your components with it.

 

[sobe123454]

So its the powersupply? ive already been throught 2.. im so frustraded

 

[Ironsounds]

Hello... 1) Any Beep codes for us to help you?... 2) Could be the Bios is not happy with your hardware settings? were you overclocking before? you could reset the bios settings to factory ( minimum boot settings ) 3) Remove all cards except video and just put in 1 or 2 sticks of RAM... and re-boot... ( we are trying to get a video post/display here )... 4) Inspect all your Power cables and connections inside your case to motherbard and video card... Unplug and plug back in...

 

[sobe123454]

Hello... 1) Any Beep codes for us to help you?... 2) Could be the Bios is not happy with your hardware settings? were you overclocking before? you could reset the bios settings to factory ( minimum boot settings ) 3) Remove all cards except video and just put in 1 or 2 sticks of RAM... and re-boot... ( we are trying to get a video post/display here )... 4) Inspect all your Power cables and connections inside your case to motherbard and video card... Unplug and plug back in...

No beep codes, dont know anyhing about bios im new to builds, i was not overclocking, how do i reset the bios to the factory minimum boot setting, i have removed all cards exept the video i put 1 stick of ram in all my power cables and connections are fine i re plugged all of them

 

[Proximon]

Not a great PSU choice for sure. However, at this point treat it like a new build and DO this checklist:
http://www.tomshardware.com/forum/261145-31-perform-steps-posting-boot-video-problems

 

[rozz]

check the memory -

pull all the ram out. .and turn on the computer.. If you start getting beep codes, means something messed up on your RAM. Start adding sticks one by one turning it on to see if it boots. when you get the first start that stalls the startup, you have found your problem

Good Luck

 

[sobe123454]

^ still didnt work.. ill try reuilding it and i will get back to you guys

 

[Ironsounds]

Hello... CMOS clear pins to jumper. are located in picture on page 5 of yor MB manual... it is between your PCI slot and the left edge of your motherboard... remove your battery and jumper those 2 pins together for a few minutes... instructions page 18 and 19...

Also I see it has on board VIDEO... remove your video card ( assuming you have one ) and plug your monitor into the motherboard connectors... and try rebooting with 1 stick of ram... then try the other one... ( assumming you have 2 sticks ) We are trying to determine if you have a RAM problem or Video card problem... also try 1 stick in either memory slot too!!!... We are trying to get a Video display to boot here...

I have had one Gigabyte board lose it's BIO's... and had to reload/upgrade it... and I have had one Gigabyte board lose it's BIO's... but could not reload/upgrade it... sent it back for free repair but paid shipping...

 

[sobe123454]

I breadboxed my computer and it worked fine everything turned on so its probably my case i think i didnt put standoffs in it so ill tell u guys what my results are..

 

[sobe123454]

Ok guys i fixed it it turns out i had not put in my screws under the motherboard to ground it /facepalm fixed it.

 

[sobe123454]

Best answer selected by sobe123454.

 

[Proximon]

Glad it's resolved