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Help with AMD Socket 939 System

post #1 of 19
Thread Starter 
I have an old Compaq micro atx system that has an AMD64 3500+ in it. I sold it a few weeks back to a friend and was waiting for him to come pick it up. I had the day off today so I decided to take it apart and clean it. After doing so, removing the old thermal compound, reseating the CPU, and setting it back up, I ran into problems. The most frustrating thing is that I didn't test it prior cleaning it so I can't even say whether it was working before I started cleaning it. Anyways, I turn it on, fans spin up to full speed (when it worked, the cpu fan would spin up for a second, then drop to an inaudible rpm) and it just sits there. I tried two different video cards, removed all pci cards and pulled all but one stick of ram (rotated through them), unplugged, redid setup, checked seating, as5 was spread perfectly, reconnected. Same result. The only thing I noticed after the first attempt was that a front usb connect was only on one row of pins instead of two (stupid, i know), but I can't imagine that would fry a motherboard. Other than that I can't for the life of me figure out what is going on with this system. Any help would be huge.
post #2 of 19
Seems like you have a short circuit somewhere. Try to boot with a minimal amount of components (i.e., only the CPU + cooler, a single stick of RAM, and the video card.) Disconnect everything else, such as the hard drive, the USB ports, etc.

Good luck.
    
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post #3 of 19
Thread Starter 
I did that, same result. I'm really hoping I'm just missing something simple. Not really in the mood to buy a used 939 mobo from ebay. Gonna try testing the system outside the case some other day, see if maybe there is some metal contact inside the case or something I can't see.
post #4 of 19
that would indeed be the next step..

Good luck.
    
CPUMotherboardGraphicsRAM
E8400 @ 3.8 GHz DFI LANPARTY DK X38-T2R eVGA 8400GS 2GB Mushkin DDR2 800 (single stick) 
Hard DriveOptical DriveOSMonitor
250GB WD SATA None Windows XP Pro 32-bit HP Pavilion f1703 
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E8400 @ 3.8 GHz DFI LANPARTY DK X38-T2R eVGA 8400GS 2GB Mushkin DDR2 800 (single stick) 
Hard DriveOptical DriveOSMonitor
250GB WD SATA None Windows XP Pro 32-bit HP Pavilion f1703 
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post #5 of 19
Have you tried a CMOS reset?
    
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post #6 of 19
Quote:
Originally Posted by Darin View Post
I have an old Compaq micro atx system that has an AMD64 3500+ in it. I sold it a few weeks back to a friend and was waiting for him to come pick it up. I had the day off today so I decided to take it apart and clean it. After doing so, removing the old thermal compound, reseating the CPU, and setting it back up, I ran into problems. The most frustrating thing is that I didn't test it prior cleaning it so I can't even say whether it was working before I started cleaning it. Anyways, I turn it on, fans spin up to full speed (when it worked, the cpu fan would spin up for a second, then drop to an inaudible rpm) and it just sits there. I tried two different video cards, removed all pci cards and pulled all but one stick of ram (rotated through them), unplugged, redid setup, checked seating, as5 was spread perfectly, reconnected. Same result. The only thing I noticed after the first attempt was that a front usb connect was only on one row of pins instead of two (stupid, i know), but I can't imagine that would fry a motherboard. Other than that I can't for the life of me figure out what is going on with this system. Any help would be huge.
Power supply on the fritz maybe? Use one of those cheap PSU testers or better yet a digital multimeter. Barring that, test with another PSU, which is easily done.
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Brick Sh*thouse
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post #7 of 19
Thread Starter 
Quote:
Originally Posted by alk View Post
Have you tried a CMOS reset?
Yes, three times for good measure, waiting a minute to five minutes before returning to standard state each time.

Quote:
Originally Posted by GoneTomorrow View Post
Power supply on the fritz maybe? Use one of those cheap PSU testers or better yet a digital multimeter. Barring that, test with another PSU, which is easily done.
I haven't done that yet, but do you really think the power supply would allow the harddrive to spin up, the fans to run, optical drive to turn on, graphics card fan to spin, and not get some kind of vga bios/post to happen? This is not in any way a rhetorical question, btw.

Oh yeah, another odd thing. The fans are three-pin. I thought a 4th was needed for speed control? Even the rear exhaust is running MUCH stronger than it used to. Makes me think it could be the power supply, but wouldn't the gpu fan spin faster too? It's running at normal speed...
post #8 of 19
Quote:
Originally Posted by Darin View Post
I haven't done that yet, but do you really think the power supply would allow the harddrive to spin up, the fans to run, optical drive to turn on, graphics card fan to spin, and not get some kind of vga bios/post to happen? This is not in any way a rhetorical question, btw.
Possibly. I had an old Antec NeoPower 480w PSU, which booted up and would run my system fine for a while, but caused random reboots. Turned out that it was undervolting on one of the rails. I didn't suspect it all until I had tried every other option. I know it isn't similar to your issue, but PSU's are the most finicky component in a PC imo. Do or don't do it, but why not eliminate it as a possibility?
Brick Sh*thouse
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Intel i5 2520M Lenovo ThinkPad X220 Intel i5 Motherboard 04W2109 Intel HD3000 Crucial 4x2 GB DDR3 PC1333 
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Samsung 840 120GB SSD Nope Itty-Bitty Fans and Heatsinks Windows 10 Professional 64-bit 
MonitorKeyboardPowerCase
LG 12.5" 1366x768 IPS Lenovo Keyboard Lenovo 90W AC Adapter Lenovo X Series ThinkPad Chassis 
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Brick Sh*thouse
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Samsung 840 120GB SSD Nope Itty-Bitty Fans and Heatsinks Windows 10 Professional 64-bit 
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LG 12.5" 1366x768 IPS Lenovo Keyboard Lenovo 90W AC Adapter Lenovo X Series ThinkPad Chassis 
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post #9 of 19
Thread Starter 
you are right indeed. We'll see next time I decide to mess with it.
post #10 of 19
Darin, have you tried testing the motherboard outside of the case? Make sure you place the board and the components on a non static surface when doing this. It almost sounds a stand-off in your case is shorting out your board. I would also test with a different PSU like GoneTomorrow suggested.

Good luck
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