Member Avatar for kkem444

Ok so i just got the parts to build a whole new comp. My specs are

opteron 165
asus a8n sli
aspire 520w psu
evga 7900 gt
1 gig corsair xms

So heres the issue. This is my first time building a computer and i felt fairly confident i could do it without a problem. So i connect everything ( i had no esd strap but i grounded myself on my psu as frequesntly as i could). After everything is all set. I plug in the power supply, switch it on. I hear it squealing slightly ( not in a bad way i can just tell its running). I press the power on my case and nothing happens at all. I have checked all the jumpers to my power switch and such and as far as i can tell they are correct. Now a couple questions. Say i manage to fry my motherboard through esd or something. Would anything get power? the fans and leds and such would i see them light up? Also What else could i possible done wrong? i am almost positive the jumpers are correct, i even tried flipping the power one backwards incase i mixed up the power/ground on it. PLEASE help me.

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  • Latest Post Latest Post by njzillest

Dani AI

Generated

A few focused checks will usually separate a PSU problem from a motherboard/case wiring issue. is right to isolate components, and ’s LED comment points in the right direction — here are practical, non-redundant steps and clarifications to try next.

First, confirm basic power delivery: verify the mains lead and the PSU rear rocker are actually on. The small standby rail (5VSB) typically powers any motherboard “standby” LED; if that LED (or any board LED) is missing, the PSU or its mains connection is the prime suspect. Also make sure the separate CPU power lead (the 4-pin/8-pin ATX12V) is seated — it’s easy to miss and the board will refuse to power the CPU without it. For the discrete card, check that the card’s external PCIe power plug is attached if the card requires one.

Bench the board outside the case on a non-conductive surface (cardboard or the motherboard box); this rules out standoffs or case shorts. Use the minimal parts needed to POST: CPU + cooler, a single RAM stick in the recommended slot, required power connectors, and the video card only if there is no onboard output. A motherboard speaker (or case speaker) helps capture POST beeps if they occur.

If there’s still nothing, test the PSU independently (PSU tester or swap with a known-good unit) rather than guessing ESD damage. Cheap or failing PSUs can spin but not supply proper rails. If the PSU checks out, the quieter failures are a shorted motherboard or bad front-panel wiring — use a multimeter to test the power switch for continuity when pressed. If warranty applies and these steps don’t reveal the fault, consider RMAing the suspect part.

Member Avatar for belikemike

Unplug everything including jumpers. Leave cpu fan, and power to board plugged in.
use a screwdriver to turn on computer by touching restart pins. See if cpu fan turns on.

Member Avatar for njzillest

you should get power if you fry your mother board. the power led light shoud first start.
IF the led or what ever light your using does not work, if its COMPLETLY dead, then there is a power problem. I remember encoutering this problem a while ago, back in the day.

i'll look into it. FOr now, get a nice book on building computers.

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