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My computer works again...

D

desura

Diamond Member
Okay, so my computer has been down for two-three weeks.

What happened was one day I decided to unplug the mouse. When I unplug the mouse suddenly system won't start up.

This keeps up the next day. In fact, sometimes system will weakly try to spin up fan only to quit.

Well, recently I simply took it apart and reseated everything.

Plugged it in and it looks like it's good again.

How did this happen?
 
Maybe the +5V line inside your usb port socket was being shorted to GND. I've seen it happen.
 
...and it doesn't work, again!

This one isn't my fault though.

My area had a blackout for several hours. When power came back on, all the lights in the home came back on, but the computer won't power on.

Help?
 
weak PSU...

weak board...



Does the PC make any Beeps? Anything u can tell us minus, its not working...
Is there a LCD on your board which posts numbers? Tell us what number its stuck at if it has one.

There is way too many things that can be wrong.. and i assume u have no spare parts to do a diag?
Which means your either at the mercy of someone who you know who is tech hardware literate,
and would have spare parts to run a diag... or... u can start making guesses and change out 1 part at a time.

At this point... id probably recommend u start changing stuff out which you can take with you to upgrade if it is the worst case scenario and u need to rebuild.

Basically... Your only limited to one part on your system, unless its a recent system...
1. New PSU.... and if it doesn't work... then new entire system.
2. Memory...
 
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I'm betting power supply as well since it seems to be related to stressful power events like a blackout.
 
...and it works again.

Don't ask me how. I basically took everything out and then just powered it on with just MB/CPU/RAM and nothing else. No video card and hard drive.

Fans spun up.

Put everything back in and it's like nothing ever happened.

I'm thinking about picking up an APC right now...suggestions?
 
new psu... not UPS.

new board... not UPS.

your problem lies in one of those.. unless u have a really bad electrical wiring.
 
...and it doesn't work.

This time, it was working great, did gaming fine, fast and stable like it always has been.

Then I shut it off.

Now it won't power back on.
 
desura said:
...and it doesn't work.

This time, it was working great, did gaming fine, fast and stable like it always has been.

Then I shut it off.

Now it won't power back on.
Click to expand...

That is a classic sign of a failed PSU. Same thing happened with my old HTPC. Replaced the PSU and all was well again.
 
...and it works again.

Paperclip test had the fans spinning up...so I think it's most likely the MB, no?

Any explanations?
 
Okay, so I downloaded this program called "speccy"

Right now am looking at some info on the motherboard voltages. For instance, the +5v line is around 5.8. The +3.3v line is like 3.38

and the 12v line is like 8.58

Cause for concern? Or will it spin up whenever I fire up my GPU for a game?
 
desura said:
Okay, so I downloaded this program called "speccy"

Right now am looking at some info on the motherboard voltages. For instance, the +5v line is around 5.8. The +3.3v line is like 3.38

and the 12v line is like 8.58

Cause for concern? Or will it spin up whenever I fire up my GPU for a game?
Click to expand...

The spec says you should be within 10% of the nominal value. Your 5V is a little out of whack but your 12V is incredibly low. Frankly, it's amazing that the system works at all with a 12V rail that's 28.5% below nominal.

You need a new PSU. What are your complete specs, and where are you located?
 
I would take those #s with a grain of salt, I've found wide varying #s reported to me depending on what program was reporting them. Tho could still def be your PSU...I would grab one as thats gonna be easier than a whole new mobo and poss cheaper.

edit:

Tried speccy (v1.14.288) which I had on my system -- #s are TOTALLY off :

+3.3 2.928
+5 4.919
+12 0.720 (yes **0** .720)
-12 -4.416
-5 -6.000

vs HWInfo 64 (v4.10-1820) which seems to be more accurate tho doesn't have some like the - #s

+3.3 3.324
+5 5.022
+12 11.976

and one more for good measure HWMonitor (v1.19.0) -- seems to have similar #s as speccy

+3.3 2.93
+5 4.92
-12 -3.55
-5 -6.00

there are newer versions but I doubt they will read much different. it just seems like some programs report the #s correctly, others don't -- depends on board/psu and program compat.
 
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