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Is my PSU dead or could it be my mother board?

post #1 of 4
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I am working on my cousins hp s3000 which is a small compact type computer and he called me with a complaint about what would appear to be a bsod. So he brings it by and I cant get it to post video on the display, I try a diff monitor and same result. I notice it is a onboard gpu so I then remove the ram and restart for beep sequence testing. No beeps at all so Im thinking the mobo is dead. I get case lights, all fans turn and everything seems good but no video or beeps. He is running vista and it is about 3/4 year old system he stated. Would you guys agree that the mobo is dead? What else could it be? Oh, also, I cleared the cmos <- not sure if that would even help but something told me to try.
homeade
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homeade
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post #2 of 4
Those things don't pull much power, so if it turns on, I would be more inclined to say it's the mobo myself.
New i7 950 build
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New i7 950 build
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post #3 of 4
Hard drive? An important sector/file is corrupted/missing....etc. My friend was getting a little bit too friendly with CCleaner and he wound up destroying his registry and it would turn on but not do jack squat.

But you said it doesn't even post. That's a pretty good indication of a bad motherboard. Seeing you've tried most of the troubleshooting things...examine the board for bad capacitors. They would be leaking or bulging (forming a dome). Look for yellow/brown residue. It could simply be that. You can fix it yourself if you are good with a soldering gun or have it repaired from a place like Badcaps.net.

I doubt it's the power supply. If the hard drive spins up, and all of the fans, you've got enough juice I would think. Try pluggin in an iPod/5V device and see if you can charge it. If so you're 5V is probably alright. 12V is fine if the fans are on and the hard drives. Hard drive also using 5V.

Eh. Yeah, it's probably the mobo.
Unlawful
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Unlawful
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post #4 of 4
Case lights and fans draw a very small amount of current. It's quite possible that the PSU is capable of putting out enough power for them but not enough to get the system to post. Your next step would be to hook up a known good PSU and see if it posts.
442
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442
(15 items)
 
Q6600
(14 items)
 
Piece O' Crappola
(13 items)
 
CPUMotherboardGraphicsRAM
Q9550 E0 DFI LanParty LT P35-T2R 2 x HD4670QT512P CF Patriot PVS24G8500ELKN 
CoolingOSMonitorPower
Stock pfsense Acer H233H Antec EarthWatts 430 
CaseAudio
custom onboard 
CPUMotherboardGraphicsRAM
Q6600 B3 Lapped @ 3.4 GA-EP45-UD3R EVGA 9600GSO 384m 96SP 4G (2x2) Patriot Viper PC2-8500 
Hard DriveOptical DriveCoolingOS
80g Maxtor, 320WDC. 320Seagate NEC ND-3550 & LiteOn CM Hyper 212+ w/PP Blademasters XP Pro SP3 
MonitorPowerCase
Acer H233H Rosewill RG630-S12 NZXT BetaEVO 
CPUMotherboardGraphicsRAM
E6420 GA-P35-DS3L GeForce 7300LE 2G PNY PC2-6400 
Hard DriveOptical DriveOSMonitor
80Gig WDC SATA NEC ND3540A Win 7 Ultimate 64bit/XP Pro Acer H233H 
PowerCase
Antec Earthwatts 430 none 
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