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Power problems...

D

Dcamel

Weaksauce
Joined
Mar 24, 2004
Messages
92
Okay, I'm currently trying to hook up a friend's homemade computer, and I'm hitting a bit of a snafu. When we press the power button, the proc-fan spins for just a second, the LEDs power for just a second, then all goes quiet. I've tried the following:
-replacing the power supply
-resetting the CMOS jumper
-exchanged the motherboard (an epox 8rda3+) for a different one (cuz the board might have been defective)

in spite of these changes, I've had no success getting it to do any more. Any advice or stuff I can try?
 
also. I was wondering if having a faulty processor could disrupt the power flow.
 
Possibly defective processor, but no because it disrupts the power flow. That or graphics card. Does anything else happen?
 
um, the little display in the lower right (near front of case) on mobo flashes FF for a second, that's about it...also had another idea, its hooked up to an outlet that is also connected to a washing machine, could it not be getting enough juice cuz of that? or maybe the 300 W PSU just isn't strong enough to power the 250 w requiring board and its accesories?
 
It might have something to do with that, it may have damaged it due to fluctuations in current. All i can say is that computers should be running off an outlet that has minimal disturbance to power supply.
 
(sigh)...this is so frustratin. At any rate, I tried it on an outlet with nothing else on it and the results were the same, plus there is a dell dimension desktop running on the same circuit as this home-made one that ain't workin, so I'd guess that it isn't the problem...ARGH SO FRUSTRATED
 
ok, I just found out my friend, in trying to get ahead of me, put the mobo in...WITHOUT using the spacers. I understand that is VERY likely to cause a problem (having it flat against the case wall) does this mean I'd have to get a new mobo as this one would be screwed? also, could that have damaged anything else? processor, etc.
 
It could have damaged something but a good PSU/mobo should have detected a short long before trying to power on the system to the point where it could have done some serious damage. It's still possible however.
 
Are you sure the PS is good? Did you try to plug a case fan into one of the molex conns. and jumper the ATX plug with a paper clip? If not sure what to do here, then don't try it. This is not something I would recommend to everyone.

ThE s[H]aDoW
 
Chances are the board is still good. Chances are, not definately. Remove the board from the case and try firing it up. Youll know prety quickly if the board is bad or not.
 
Yes, If you do NOT use the spacers you will 'usually' short out the board. Take the mobo off and reset it with the spacers and try. If that doesn't work, ... sigh ... again replace the mobo and try again.
 
aha, its powering up since then, but...when I go to install windows, it can't read the HD (I get to the part where I select a partition to install to, and it can read the HD's capacity, but it says "system cannot access this disk). I set the jumper on the HD first to the MASTER position (it was on slave position) and am now going to try it on master w/ slave. Maaaaaaaaaybe the HD is shot? I mean the IDE is hooked up and it can obviously read my cd-rom and can read the capacity of the HD, but it won't access the darned CD. ARGHHGHGHG IT WAS NEVER THIS HARD WHEN I DID IT THE FIRST TIME T_T
 
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