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Help troubleshooting a problem no post

post #1 of 8
Thread Starter 
I have a dell optiplex gx 280 that started having a problem 3 days ago,
When I would press the power button the light would turn orange (instead of green) then my cpu fan and psu fan would haul ass to full speed (I was Ducked for cover & prepared for lift off type of speed) if I shut off the power at my surge bar , then pressed the power button it would start & go to windows.

This got worse over the 3 days and now it won't go to windows at all it just rev's the fans all the way and stays that way

Now I don't know what to do I am thinkng either the power supply or the cpu?
Hope you guys can help
post #2 of 8
First, get rid of the surge protector and plug it straight into the wall while you're troubleshooting. Then, take the RAM out one stick at a time, try powering on, and see if you get the same problem. Then try taking all the RAM out. If you take all the RAM out and don't hear an annoying beeping after power on, your motherboard is likely bad. If you do get beeping, then try unplugging other things, cards, usb, etc., to see if the problem goes away.
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post #3 of 8
Thread Starter 
Quote:
Originally Posted by losttsol View Post

First, get rid of the surge protector and plug it straight into the wall while you're troubleshooting. Then, take the RAM out one stick at a time, try powering on, and see if you get the same problem. Then try taking all the RAM out. If you take all the RAM out and don't hear an annoying beeping after power on, your motherboard is likely bad. If you do get beeping, then try unplugging other things, cards, usb, etc., to see if the problem goes away.

Yeah I just tried all of that and it does the same thing no beeps from the board only a orange light that stays lit I even tried reseating the cpu
post #4 of 8
Next thing to try is clearing the CMOS. Unplug the computer, then remove the little battery that is on the motherboard. Put it back in after 30 seconds or so and try starting up!
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post #5 of 8
Thread Starter 
Thanks guys it was the motherboard after all I bid on one on ebay and won it for $24 so that can't be beat I installed it and it fired right up! Thanks for the help trouble shooting I also took the opportunity to upgrade my cpu from 2.8ghz to 3.6ghz p4 for $11 the highest my mobo could handle was 3.8ghz but for $15 more i figured it wouldn't matter much, maybe I'll get a little smoother game paly in doom 3 whilst my dual gtx 660 i5 3570k rig is being finished up!biggrin.gif
post #6 of 8
Thread Starter 
Quote:
Originally Posted by losttsol View Post

First, get rid of the surge protector and plug it straight into the wall while you're troubleshooting. Then, take the RAM out one stick at a time, try powering on, and see if you get the same problem. Then try taking all the RAM out. If you take all the RAM out and don't hear an annoying beeping after power on, your motherboard is likely bad. If you do get beeping, then try unplugging other things, cards, usb, etc., to see if the problem goes away.
Hi I bought a new mobo and it worked right a way so it was that my old mobo was fried but now my new mobo seems to be starting to do the same thing . What could it be causing this? maybe a bad psu?
post #7 of 8
Quote:
Originally Posted by waltcujo View Post

Hi I bought a new mobo and it worked right a way so it was that my old mobo was fried but now my new mobo seems to be starting to do the same thing . What could it be causing this? maybe a bad psu?

A bad PSU is a reasonable guess (although I have never personally had this happen before). A simple although time consuming way to test for sure is take the PSU out of your nice rig and put it in the one you are having trouble with. See if problems continue.
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DIY Laptop
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CPUMotherboardGraphicsRAM
i5-3570K @4.3GHz ASRock Z77 Extreme4-M Radeon HD 7970 GHz 2x4GB Corsair Vengeance 2133MHz 
Hard DriveOptical DriveOSPower
Intel 520 SSD 240GB Bluray / DVD combo Win 7 Home 64 Seasonic 550W modular 
Case
NZXT Vulcan 
CPUCPUMotherboardGraphics
Athlon 64 FX-55 Clawhammer Or Athlon 64 X2 4200+ Manchester Asus A8N32 - SLI ATI Radeon X850 XT PE 
GraphicsRAMHard DriveOptical Drive
Or MSI GeForce 210 4 x 1GB Corsair XMS 500MHz OCz Agility 2 LITE-ON DVD 
CoolingOSPowerCase
Antec Kuhler 920 Win 7 Home Premium OEM Antec High Current Pro NZXT Phantom 
CPUGraphicsRAMHard Drive
i5-3360M @2.8-3.5GHz nVidia GT 650M @1GHz 2x4GB G.Skill 1600MHz Crucial M4 SSD 128GB 
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Ubuntu 12.04 11.6in, 1366x768 Clevo W110ER 
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post #8 of 8
    I can't understand why so many people demonize power supplies.  The 160W PSU in the Dell GX280 SFF is fully adequate for most uses, and is well designed (if you have a different model GX280, I assume that it has an even better power supply).  How many of you know that the average office-type (non gaming) desktop computer (which the GX280 is) uses 100W or less?  I've got a 2.6 GHz dual-core computer (eMachines EL1200, AMD 5050e, original but modded PSU) that uses only 68W when fully busy. It can play 720p60 and 1080p30 video just fine.  Monster power supplies are only needed when power consuming video cards are installed, when you overclock the CPU, and when you install a very fast CPU with many cores.
    Back on subject: on the Dell GX280, the problem is with the buck-converter on the motherboard.  The buck-converter converts 12v from the power supply unit (PSU) to 1.3v for the CPU.  The ADP3188 chip that drives the buck-converter is failing on many of these motherboards.  I don't know why that is, but I seriously recommend that you simply get a different computer.  Much nicer computers (Windows 7, dual-core, PCI-e x16) can be had on eBay for $80–$150 if you shop and bid carefully.
    If you want more details, read my post here.
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