Computer switches on for half a second, then turns off

Toggle sidebar Toggle sidebar
J

Joshed1

Honorable
Jan 18, 2014
4
0
10,510
I built my PC earlier today, and when it came around to running it, the lights on the side of the case momentarily started up then switched off after about half a second. I didn't hear my fans/they didn't have time to get started. The issue now is, that I can no longer start the computer up even after removing the plugs etc. It just seems to be dead. All the parts I used were new so I'm not sure what would be the problem. I've already tried the methods listed in the POST sticky that people link too. Help is appreciated.

Just to add, these are the parts I'm using
http://uk.pcpartpicker.com/parts/partlist/
 
Sort by date Sort by votes
smorizio

smorizio

Titan
Jan 22, 2010
30,984
9
125,315
take the motherboard out of the case with just the onboard video and one ram dimm see if the mb will turn on. if it wont take the power supply on the 24 pin atx plug jumper the gree nwire to a black wire see if the unit turns on. if it does read the voltages with a volt meter. see if your missing any or try another test power supply. on your mb lok at the bios rev then look at the motherboard cpu guild make sure the mb will post with that cpu and you have the right bios. some motherboards need bios updates to post.
 
Upvote 0 Downvote
J

Joshed1

Honorable
Jan 18, 2014
4
0
10,510
Okay I tried the MemOK button, and a flash of blue light occurred. Now the button does not do anything so I'm not what this means. I don't think the light came from around the button either.

Edit: It appears that the blue light is the light from the case LED's. I've tried removing a RAM stick and I still get the same issue. I have to switch the power on and off again to get the blue flash to even occur. At least this means I haven't completely killed everything.
 
Upvote 0 Downvote
smorizio

smorizio

Titan
Jan 22, 2010
30,984
9
125,315
check that the mb on top of the standoffs nothing shorting the mb out. unplug the case fans and usb ports. some times you can have a bad fan. check on the edge of the mb that the eight pin power plug is connected. check yur case header wires make sure there on the right pins.
 
Upvote 0 Downvote
J

Joshed1

Honorable
Jan 18, 2014
4
0
10,510
I checked all the above, but still no luck. The memok button still produces the same flash of the case lights and then switches off until I manually switch the power on and off again. The motherboard light is showing up as green though, so I'm perplexed as to what is wrong.
 
Upvote 0 Downvote
smorizio

smorizio

Titan
Jan 22, 2010
30,984
9
125,315
if your mb is an asus with the usb flashback port try updating the bios. also check to see that your cpu is seated and there no bent pins. if yu have another power supply check that your power supply is working and check for any dead shorts. some times i found cases that had bad fans.with the fans connected to the mb...no post.
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom