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PC has died !! I've disconnected all the HDDs, ROM, RAM, Video Cards and still dead. Power light comes on, CPU fan starts up, NO LIGHTS anywhere on the motherboard, two short beeps, followed by third beep. HELP !!!!

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Blown caps can cause memory read errors they can be replaced however a new mb would be a better long term choice in these cases, as more cascade damage could affect the mb in time

Posted on Jun 19, 2008

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Http://www.pchell.com/hardware/beepcodes.shtml


Find out what BIOS your motherboard uses and then consult the site to see what those beeps mean. BIOS beeps are the computers way of trying to tell us whats wrong. Honestly though. Sounds like a dead Motherboard.

Posted on Jun 19, 2008

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Based on your information the two beeps is an indication that you motherboard is alive and looking for a memory. is the video integrated or you use a separate video card? i think this has something to do with your video. if your video is integrated try putting in a video card

Posted on Jun 19, 2008

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Continuous beep and the systems is not coming up {boot}


Hardware problem:
* dead RAM
* dead video-card
* RAM not fully "seated" in its slot(s)
* video-card not fully "seated"
* dead fan on top of the CPU/heatsink.
* failing power-supply.

Jul 12, 2011 | HP Compaq dc5100 Small Form Factor PC...

1 Answer

Dimension 5100 wont start up .power led on MB is on changed mb.shorted out test done fan went.nothing else.what next ???


I have seen more than a few of these (Dimension 5100 series) die due to mainboard issues. If you haven't done so already, take out everything you can, (add-in cards, modem, disconnect hard drives, CD drives, etc.) Try to restart. If you get it to boot, you can add in one item at a time, and realize that when it won't start that is probably the culprit.
Next, If you have a second PC that has known good RAM of the same type, I would swap that out as well. Then try to boot with just video, Mainboard and RAM. If you see any blinking lights/sounds/etc. then report that on here as well. There are beep codes and on Dell's there are light error codes.
I you do happen to have a spare CPU, you could swap that out as well if you can, but I would not bet that is the problem as they are pretty durable for the most part.
If none of these comes up with a booting PC, it could be your replacement mainboard is bad.

Mar 19, 2011 | Dell Dimension 5100 (D51L1) PC Desktop

1 Answer

My power supply died (popped), so I replaced it (Antec SL350 with an Antec SL350S). However, when I turned on the switch on the back of the power supply, the motherboard powered up immediately (tower...


If you "popped" the power supply, I would check to see if the RAM might have taken a hit as well. Ram chips and CPU are sensitive when it comes to power surges. I would troubleshoot the system, unplug everything. you need monitor, power, cpu, and ram (1 at a time). Check to see if the system will POST. if you do get it to POST, start with 1 item at a time and see if the system will POST every time. If nothing happens, there is a chance you may have a damaged motherboard or cpu.

Mar 28, 2017 | ASUS A8V Motherboard

1 Answer

System unit led is yellow and start good condiotion but no signal


The light on the LCD screen stays yellow?

I would start with puling out the ram chips and see if it works,

If you get some beeps and video works with ram chips out, then its a bad ram chip.

If thats not it.. unplug all cards cd/dvd rom and harddrive to test motherboard and CPU chip. see if you can get video to work with everthing but cpu and power suppy unpuged

Apr 28, 2010 | Dell Optiplex 755 Desktop Desktop Computer...

3 Answers

NFORCE3-A CPU fan & LED come on, nothing else, no beep or video


If the RAM is incompatible with your board then yes it would not allow a boot. Make sure your front panel power wire is plugged into the proper spot on the motherboard and retry. If it's the RAM then you will still have the problem. If it was the wire loose or in wrong spot then it should work. Hope this helps & please remember to rate my answer. Thanks.

Dec 27, 2008 | EliteGroup nForce3-A Motherboard

1 Answer

No display


Try swaping your memory with a known good stick of ram.
Are you sure your monitor is good? Video cables?
Try changing (if pci) slots when installing video card.
Other than these 3 things the only pretty sure thing is; sorry, mother board or cpu.

Jul 01, 2008 | E-Machines eMachines Desktop PC

1 Answer

Fails to go to "Setup", does not show on Screen.


1.make sure your monitor is plugged on the video card.
2.check *********** board manual for videocard slots.
3.check your videocard if they nid extra power from four(4) pin
female power cable or six pin female power cable.
4.try using another monitor.. or TV XD

May 09, 2008 | ASUS P5N-E SLI Motherboard

1 Answer

No output to monitor,graphics cards work,new psu, new ram, all lights come on and fans turn. the mobo is a winfast nf4sk8aa graphics - nvidia 6600gt x2 cpu - amd 4000+ ram - corsair 1gb 3200 value select...


unplug power
re-seat video card
plug power - turn on all
windows comes up - else try another video card.
control panel under video uninstall then reinstall video driver
repair video programs or install video program

Mar 13, 2008 | Computers & Internet

1 Answer

Not posting


Maybe a silly question to ask; but did you connect the processor power lead, as unlike some processors this needs a seperate supply.

Dec 18, 2006 | Mach Speed MK8-939A (VIPERMK8939A)...

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