Computer won't start

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KillerTomato

Limp Gawd
Joined
Nov 29, 2004
Messages
255
I don't know what happened. I was using my computer last night and everything was dandy. I try to boot it up in the morning and nothing happens. Green light on the MoBo is still on and I gave it a good dusting today to see if that would remedy the problem.Nothing.

I did put in something to up the amount of usb slots and it came off the clipping. I thought maybe that might short circuit the thing but the green light is still on.

Everything is plugged in. Nothing changed from last night and it won't power up. Any ideas?
 
Unplug EVERYTHING you can to just get a video display and see if you get some life.
It may be the PSU is on its last legs, reducing the load will help if so.
Of course, if it works, any one of the components you have unplugged could be the culprit too.
At least it may help you start troubleshooting.
 
You can also unplug the power from the PSU, hit your power button, then plugging it back in. Sometimes that will do the trick.
 
Everything but the DVI input for the monitor was unplugged. These were mouse/keyboard plug ins, so no big power load.

Still nothing. I know for fact it cannot be the PSU because its PC P & C. I've only had it for about 2-3 years. This is seriously a strange problem. Could it be I shorted out the MoBo? The green light is still on but nothing is really working.

What could it be?
 
Sorry for the double post but not having my main rig up is killing me and I'm really out of ideas. I cleared the CMOS and everything, pushed the power button and was disappointed again.

The only thing plugged in at this point is just the PSU. The green light on the motherboard is on but I still suspect a short.

I'm really getting irritated at this problem because it seems nothing is really rearing its head.

I got a voltmeter, what could I check for shorts?

Any input would be great.
 
KillerTomato said:
Still nothing. I know for fact it cannot be the PSU because its PC P & C. I've only had it for about 2-3 years.
Click to expand...

LOL! No matter who is the manufacturer, you should still test no matter what. Even high-end made parts will fail. This FAQ should help you test the PSU:
http://www.bfgpower.com/troubleshooting.html#DMM

Also, remove the case power connector from the motherboard. Try starting the PC by shorting (connecting) the two power pins on the motherboard with a screwdriver.

In addition, test every part of your PC in another PC if possible
 
Where are those case pin connecters? I shorted out the green and black wires on the 24 pin connecter and everything powers up. fans start spinning so maybe it isnt the psu.

Exactly where do I short the motherboard to turn it on?
 
KillerTomato said:
Exactly where do I short the motherboard to turn it on?
Click to expand...

The power pins. You know, the ones that's connected to your power button via some cable? Remove the cable and the power pins are exposed.
 
Got absolutely nothing.

I'm really befuddles. Could it be the psu? I can short start it and fans come on, which should mean its fine...removed the video and the hard drives, thinking they could short it out and nothing changes. I took volt meter readings and everything is within its power band 12v 5v and 3v.

One weird thing is that I can only take readings when I short out the 24 pin connector and get power. The green light is on and power is circulating but I don't pick up any readings.

:/
 
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