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Help omg wow

D

diSynthetic

n00b
Joined
Mar 12, 2004
Messages
50
I'm trying to fix a PC I built for my friend a little while ago. He's had it maybe a week now, and the problem is that he shut it down one day then came back later that night and it wouldn't post boot. The monitor would not come on either. I have tried another monitor, same story. I checked the memory for functionality by switching out the stick with another functioning one, no dice. Another processor, no dice.
There are no signs of the mobo having burned out, like the capacitors being popped or anything. All the functioning lights of the mobo switch on, power flows through it properly to my knowledge.
My question is, what could have happened to the PC that would make it not post boot in this situation?

I'll get the specs for the system and edit the post in a few minutes, but any feedback would be severely helpful as I'm at his house trying to fix it now and I'm at a loss for words.
 
This has happen to me but when I have installed hardware :p , just reset the CMOS, see if that helps.
 
I reset the CMOS by popping the battery out and bac kin, same story.
The mobo is a Abit NF7-S, processor is a AMD XP1700+ which was just replaced with a Sempron 2800. No change after installing the new processor.
 
This may sound dumb but try bypassing the power switch I've had lots of 25 cent switch's knock out lots of systems, or you could need to put a new power supply in.
 
how long did you wait? CMOS can take a long time to discharge and reset. Unplug the computer, pop the battery, and wait 1/2 hour.

ill put a nickle on a bum video card. any other bets?
 
k, I just checked out some FAQs on the Abit site, and they told me the correct procedure for discharging the CMOS. I unplugged the power supply, then popped out the ATX power connectors, set the CMOS reset jumper to reset, AND popped the battery. Just for thoroughness.
Waiting now, but could there be something else to cause this problem if this doesn't work?
 
btw, I removed the BFGTech Nvidia 5700 heatsink and checked for burnout and saw no signs. The powersupply is a 4 month old Antec 400w.

And I also thought of the power switch and used a screwdriver to touch the jumpers, worked the same. The power switch was working.
 
Okay, I properly cleared CMOS and no dice. Same problem.
I then tried a PCI graphics card I know to work, and it did the same thing.

One thing I just noticed is that the Caps Lock, Num Lock, and Scroll Lock all light up then go off, then back on indefinitely.

Help :(
 
Is the board RMAable? If it is I'd prepair it to be RMAed cause it sounds like a dead board to me.
 
Yeah, sounds like a dead board. But as a precaution, unplug the reset button header on the motherboard. Sometimes it's the strangest thing...

While you're at it, unplug the power switch header, and use a flathead screwdriver or something to start the computer.
 
Hey bud use your trouble shooting skills

Take out the RAM, see if the board gives you beep codes when you do so

Easiest thing to do is just pull RAM,CPU, and all PCI / AGP cards you have installed on the mobo and keep them by handy to re insert

After all is pulled turn on PS and then cut it offf

Now insert the pulled parts back into the machine and try your luck
 
Well, you haven't tried a new video card yet, have you? I would try that. If it has integrated video try using it.
 
Before you RMA it, I'd try switching the powersupply.
 
LOL you guys make it sound like he has a uber computer warehouse in the back go get this and try that haha good luck though :D :D
 
As stupid as this may sound I have accidently put a keyboard/mouse combo in the wrong PS/2 ports and it caused havok such as this.
 
ohnnyj said:
As stupid as this may sound I have accidently put a keyboard/mouse combo in the wrong PS/2 ports and it caused havok such as this.
Click to expand...


There is proably something wrong with the board if that happens. The PS/2 ports are on the same bus, and if you did just what you said it shouldn't screw up but just not detect them.
 
I dont have any experience with that particular board so I have to ask. Are there any diagnostic leds on it. My abit TH7 2 had leds if the power was hooked up.

Also you could start the power supply manually to see if its working.

P.S. don't forget to check the buttons.
 
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