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PC wouldn't boot...had to do some modding

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zexmarquies01

Member
Joined
May 27, 2002
Location
Ohio
Arggg, i just spent 7 hours getting my PC back up and going! AND i have to do something *special* to get my computer to turn on from now on...

So, let me tell you guys the story.


So, i turned off my PC when i left work, due to my fathers request. Fine, so i shut down the PC via Start->Shutdown. a proper shutdown.

I get home from work, press my power button...nothing happens. Hmm..i check the wires, all good, try again..nothing. I check my surge protector(s), again everything is fine. So i unplug and turn off the PSU for a few min, plug it all back in, and again...nothing. I was getting the little yellow Standby led to light up, but that was all.

Ok, time for some testing...

First, i jump the green wire to a black wire on my 20 pin PSU cable. Fans spin, and everything works. Ok.....now i'm confused. PSU is working, yet the motherboard won't get power....

Sooo, i then take the PC out to the kitchen, take everything off the PSU's rails, except for a few fans, i leave the motherboard plugged in, with all the 12 volt power inputs plugged in, and had the +4 pins plugged in ( the part of the 24 pin hookup ). I left the HDD's unplugged. So, i jump the green wire again...Power gets sent to the motherboard, powering up all the fans. And 2 of these fans were connected to the motherboards 3pin adapters. 1 fan was connected directly to a PSU's molex.

ok, so i bust out the DMM. I check the 5 volt, and 3 volt rails...everything looks good. so i figure its GOT to be something with the damn motherboard not closing the circuit to the green PSU wire.

By this time, quite a few hours had passed, due to trouble shooting, and a trip to walmart to buy a new DMM, because we lost our old one.

Sooo, i then proceed to take the PSU's 20 pin cable, and about 6 inches away from the plugin, i slowly, and carefully cut away a small strip of the plastic coating around the green wire, and around a black wire ( for ground ). I stripped the plastic all the way around, and have about...3 millimeters worth of wire on the green and black wire exposed. ( i say 3 millimeters as a guess, HAD to be less than 5mm ).

So then, i proceed to take a computer power-switch ( aka: a momentary power switch...the kind that when you press it, the button bounces back into its normal state, And i used a momentary power switch, because i didn't have a permanent power switch on hand ). I take the wires from the switch, and splice them to the green and black wires from the PSU.

I then plug the 20 pin cable back into the motherboard. And instead of hitting the regular power button, i pressed and held the switched i spliced onto the PSU. I kept it held, and viola! the PC boots up!

Now, my Motherboard has a built in Power and Reset switch. I got to thinking...

While i was holding down the switch i spliced, after about 2 seconds, i hit the power button on my motherboard, and let go of the switch...and bam...the computer stays up and working!

So then i plug everything back together, move the PC back into my room, hook up the HDD's, and the monitors.

I then grab the switch, Press and hold the button for about 2 seconds, then push the power button on my motherboard, let go of the switch...and YAY computer is back up and working, so then i proceed to OC forums to tell everyone my grand adventure to bring my PC back to life, after 7 hours of surgery!

So yeah....i'm not sure WHY the motherboard isn't working right. All i know is that its not closing the circuit from the green wire, to turn the PSU on. So, whenever i boot up my machine, i have to hold that momentary switch for about 2 seconds, then hit the power button on my computer.

At least i know that not another single soul will ever turn my PC on! they will NEVER figure it out! :soda:


if some of the stuff i have said seems weird, or hard to understand...just ask, and hopefully, i can explain farther. Right now, its 7am for me. been up for nearly 20 hours now, and went from working at work, to spending 7 hours working on my computer...so i'm a bit tired.
 
OP
zexmarquies01

zexmarquies01

Member
Joined
May 27, 2002
Location
Ohio
That's DFI for damn buggy boards :mad:

Heh, the thing is, this is the 1st time i'v ever had any problem with a DFI board at all. I never had a problem with cold booting, or anything. This is like my 3rd DFI board. ( none of the other 2 died...i just changed mobo's when i upgraded ).

But hey, at least i showed that buggy DFI board who's the BOSS!!!