Pc turned on for a second, then died

stranger 111

Honorable
Jan 13, 2014
16
0
10,510
component:
i3 4160
Asus H81m-e
Corsair value select 8 GB one dimm
GTx 750 ti Oc edition (ASUS)
Corsair Power Suppy ( dont know which one )
Casecom casing vs 94


ok so i turned on the pc, it turned on for second (not a second though more like for one moment) and then turned off. the led on the power switch also turned on for a moment.

the motherboard and graphics card leds are On. but the pc wont start...pls halp.!!!!!!!!!!1
 
Solution
not really. But did you check or did u separate everything and reconnected everything again?

Time and time again, I recall of people telling that checked everything, and everything was indeed connected.

I insisted, people disconnected and reconnected everything. Computer would now magically work :D

driftedpanic

Distinguished
Jan 3, 2013
27
0
18,540
Make sure that all cables are tightly attached to the motherboard. If still having issues it could be your PSU. When did this start happening? and is this a new Build or have you been using for a while ?
 

blasc

Reputable
Nov 21, 2014
769
2
5,360
Try to reset the CMOS. Do this:

You will need a paperclip/screwdriver/some metallic stuff for this. Also a flashlight is welcome (or just do it with day light):

1st-> open PC.
2nd -> search the CLR_CMOS pins. should be something like this:

01-two-pins.jpg


3rd -> touch both pins with the metallic (something that is conductive) stuff, so it short circuits, for 5 seconds at least.
4th -> BIOS should be reset to factory default.
5yh -> yey


extra info:
http://i.ytimg.com/vi/-9RnIj-EcdQ/maxresdefault.jpg
https://www.youtube.com/watch?v=vNX6-dkFey4
http://www.wikihow.com/Reset-Your-BIOS
https://www.youtube.com/watch?v=Pdp_L5IxaNI
 

driftedpanic

Distinguished
Jan 3, 2013
27
0
18,540
Before you go and mess with the CMOS battery, let us know if this is a new build or old build. I would not start with reseting the CMOS battery. I would Go from the PSU and work from there. Most likely with the information we have it is your PSU
 

RageGamingZone

Reputable
Jul 22, 2015
221
0
4,760
the current symptoms points to your power supply, or there might be a short somewhere. What you can try is disconnecting all the connectors from the PSU and test one by one and see if your computer will turn on. Then connect one connector at a time to other components, and turning the computer on and off each time.
 

blasc

Reputable
Nov 21, 2014
769
2
5,360


??

where did you read anything about battery?

But yes I also agree it will be the PSU, but this is something that takes 5 seconds and takes other options out of the way.
 

blasc

Reputable
Nov 21, 2014
769
2
5,360
ok then its time to open the case, and recheck ALL connections.

Best option would be to take everything apart again (CPU cooler included, but leave this as last resort, because if you take the cooler out you will have to reapply the thermal paste), and put it all again together.

I assume you were the one who built and put all parts together?
 

stranger 111

Honorable
Jan 13, 2014
16
0
10,510


yes. but i double checked the connections and every thing. the only thing i didnt plug was the f. panel audio. but is it that necessary.?
 

blasc

Reputable
Nov 21, 2014
769
2
5,360
not really. But did you check or did u separate everything and reconnected everything again?

Time and time again, I recall of people telling that checked everything, and everything was indeed connected.

I insisted, people disconnected and reconnected everything. Computer would now magically work :D
 
Solution

blasc

Reputable
Nov 21, 2014
769
2
5,360
yes. try this: take everything outside of the case. Put the motherboard layed on top of the table (wood table please) or on top of some carton thing (the motherboard case would be nice for example). something like this (last picture before putting the stuff in the case):

https://www.avforums.com/threads/guide-how-to-build-a-htpc.1044943/

connect all stuff. connect the PSU. connect to the monitor. turn on
 

blasc

Reputable
Nov 21, 2014
769
2
5,360


I remembered that the case could be doing some kind of short circuiting.... (hard to happen, but has already happened more than once ^^)