Question about Dell Dimension 5100 (D51L1) PC Desktop

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I have an hp Dimension 5100C. I turned on the computer but now it does not power up. The only thing I see is the power button with a rapid orange flash on/off but the computer will not turn on. Do you know what the problem might be? thx

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1. Your power to the hard drive has failed
2. possibly a new power supply is needed.

Posted on Jul 12, 2010


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1 Answer

Cd and dvd not found in device manager and computer on dell series 5100c\

Hello, It sounds like you don't have the drivers for the cd players, pull the cd player out and find out what make and model it is. Then google the device and get the drivers for the operating system you have.

Dec 20, 2013 | Dell Dimension 5100C (D51CL1) PC Desktop

1 Answer

Dimension 3100 turns on the power button has a steady orange light there is also an orange light on motherboard cpu and power suplly fans working but wont bot up

Blinking amber (orange) indicates a problem with the power supply inside the computer. If the system cannot boot and there is a solid amber light, this could indicate a problem with the power connections for the CPU on the system board (see "Power Problems" in your Owner's Manual).

Mar 06, 2011 | Dell Dimension 3100 PC Desktop

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5100c wont power up and green LED next to power supply is blinking.

Hold the power button in for 10 seconds on the tower, then push it back- it sounds like your system is locked into standby/hibernation- holding the button forces a full shutdown. If that does not work, write down your express service code. If the system is still in warranty, you may need to contact Dell technical support to have your system troubleshot for No Post. If not, utilize to troubleshoot the No Post situation- often, the system will tell you which component failed, which saves you money as far as repair costs go!

I’m happy to help further over the phone at

Nov 04, 2010 | Dell Dimension 5100C (D51CL1) PC Desktop

1 Answer

Dell Dimension 5100c Model: DCCY will not boot.


Is the power button a steady abmber light?

If so follow the instruction below>>>>

Remove the power cord from the back of the computer. Then open the side casing of the tower and unplug the 24 pin block connector from the motherboard. The 24 pin block connector looks like this >>>>>


Once removed press the on/off button on the computer to dispel and residual power from the motherboard.
Then connect the block connector again and put the side panel back on and then plug the power cord back in and try to boot the computer up.

If its still the same then the power supply inside the computer may need replacing.

Good luck.

Jul 03, 2010 | Dell Computers & Internet

1 Answer

After a 10 hour power failure the computer did not power up. The power button blinks orange rapidly. I tried changing the cord and pulling out and replacing the button battery but there was no effect....

The Motherboard is defective. I hope it is still under warranty because these computers are notorious for corosion forming on the motherboard which ultimately leads to capacitor failure. Just open it up and check for any signs of corrosion on the capacitors on the MB.

Mar 15, 2010 | Dell Dimension E510 Dual Core 2.8 Ghz...

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My Dell Dimension 5100C will not come out of sleep mode. Everytime i press the power button, the light blinks orange and keeps blinking ,no noise from the inside or anything. It Just stays in hibernate...

the continuously blinking yellow litght indicates that the power supply gets juice from the line but cannot distribute powe to the components. the first thing to do is to check and see if the power supply is working. dell power supplys have a test button, if you turn the computer around and hold the button on the power supply down for a few seconds the light should turn green, if it dosen't then you need a new power supply. if the power supply is ok, turn the computer on and have a look at the diagnostic lights (on the back, labeled 123 and 4) if you call the dell support line and tell them your model number (or give them the service tag) and which of those lights are on they will be able to tell you what the problem is. if you are still in warranty they will fix you, if not they will direct you to someone who can.

Aug 20, 2009 | Computers & Internet

1 Answer

Dell dimension 5100c fan loud, is this normal?

fan is either dirty and needs cleaning or fan's ball bearing is damaged and needs replacement.

Apr 26, 2009 | Dell Dimension 5100C (D51CL1) PC Desktop

3 Answers


check your power supply unit

May 12, 2008 | Computers & Internet

2 Answers

Dell dimension 5100, power button has turned orange

If under warranty contact Dell? I had this same problem, a new motherboard and fan assembly fixed this problem. Bad capacitors on the motherbard.

Apr 12, 2008 | Dell Dimension 5100 (D51L1) PC Desktop

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