Question about Dell Dimension 5100 (D51L1) PC Desktop

2 Answers

Wont power up

1 went through dell troublshooting ( removing cables from MB ) same problem 2 had power supply checked at Frys Electronics checked OK 3 ohmed on switch OK 4 replaced Motherboard same problem. Only green led on motherboard lites.. nothing else has power?????????????

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  • mulepanic Dec 02, 2008

    Computer will not power up. The green led light inside the tower lights up but that is all. I checked the power cable and it is ok because i used the same one with my printer and the printer powers up. I believe my problem may be a power switch/power supply that's inside the cpu, or at least I hope? Any advice?

  • Anonymous Dec 02, 2008

    my dell 5100 wont power up after a virus,a yellow light on the power button keeps on flashing,can anyone help.thanks

  • Susan Donnelly Jan 20, 2009

    how do i remove the motherboard?

  • Patrick Welch May 11, 2010

    No doubt you've fixed this or given up by now but in the interest of helping others with this problem here is a solution. I had the same problem and it turned out to be the Front I/O & Control Panel Assembly. I suspect that the USB ports had shorted out and took the whole card down. The not turning on problem was preceded by the USB ports failing. I couldn't figure out how to bypass the card to power the computer. Dell won't help if you are not under warranty (unless you purchase some additional support). I couldn't find a replacement board on Dell's web site but found some other vendors that sold them. I bought one for about $70 and it did the trick. There seems to be at least two similar model numbers for this card. I don't know if they are interchangeable or what the differences are. If you look on the card there should be a series of numbers. Look for an "X" followed by 4 numbers. In my case it was "X8682". This is the model number for the card. If you search for shopping sites with your Dell model and this card number you should find vendors to buy the card. I think this is a design flaw having the USB ports on the same connection as the on switch. It looks like many people have had this problem. One bad usb port and your whole system is taken down. My guess is that the average user is not going to be able to figure this out and will spend lots of money unnecessarily. For those comfortable opening up the case and covers (you can download the manual from the Dell site) and unplugging ribbon cables this is a fairly simple fix. Keep in mind the card won't come with any instructions. Make sure you follow power safety rules and ground yourself.

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Hey arnwulf,u fixed my computer after a repair shop couldnt!-my 5100 had an amber light flashing on front and green light on motherboard.i had to remove the memory boards[if u got more than one u have to remove all]then put power on,turn power off,put memory boards back,power up again and hey wow,it works,u saved me a lot of money,thank you.

Posted on Jan 19, 2009

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Try replacing the memory.

Posted on Nov 25, 2008

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Hi. I have a Dell Desktop dimentions e520.. 2 months ago, i went on a trip for a weekend and when i came back my pc wont turn on. it was blinking amber or orange. i search online and it might be the power...


The power supply is receiving power from the source but is unable to properly distribute it to the components. It sounds like the power supply but unless you have a power supply tester that indicates if all voltages are present the only way to make sure (and cheaper) is to replace the power supply as opposed to replacing the motherboard.

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COMPUTER WILL NOT START No HD activity No fan Fuse OK


Thank you for posting to Fixya.com and it is my pleasure to guide you.

If your computer is less than a year old, take it back to the store and tell them to check it out. If you have a problem with that, simiply ask for a replacement.

1. Take the power supply to an electronic store and ask them to check the power supply, unless you have the equipment to make the test. If the power supply is putting out the correct power then the problem may be on the motherboard.

2. Plug the power supply back into the connectors on the MB and turn on the pc. If there is still no function of the HD then the connector at the HD should be checked. Using an OHM meter you can check the power cable for continuity by setting the OHM meter at the CONTinuity setting and put the end of each probe on both ends of the wires, one at a time. Check all the ends. If there is a beep, the wire is ok, if not the wire is bad.

3. You can also check the power connector on the hard drive for continuity. Touch the out side of a pin and then on the back of the HD by touching the flat soldered portion of the pin. There should be a beep there, if not then the pin is bad, which would make the HD incapable of running. You could check the other three pins as well. You could purchased another cable instead of checking it and use it.

If those two steps are ok then there is a problem on the motherboard. That would require a pc repairman to look at the MB.

Good luck and please post back that you are successful and give thumbs up if my solution has worked for you. If I can be more helpful just reply.

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if u have another pc at home ,u could try the memory from the dell in it if its compatible.(by dell) reseat the memory,any add in cards,and any video cards,and check all power supply cables to the mb.per the dell site(the 2 beeps are for the memory moduals) though it said to take out the memory and put 1 of them in and boot,if it works fine,then check the other 1.

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Hi,

I work for Dell, If the power button led light is flashing amber or amber (the Power supply is faulty) The Yellow light you saw inside the motherboard is the "Flea Light" (that is one way you could check if there is still power on the motherboard). Since the motherboard was replaced there are a few more things to check:

1. Video card (integrated or expansion)
2. Monitor (Make sure it displays self test feature when the cables are removed)
3. Monitor Cables (VGA / DVi)
4. Power Cable on the Monitor (try a different cable)
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Hope this helps.

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I have a dell xps 410 i replaced the power supply because it wont turn on still have the same problem,i used a dell replacement.it just shut down one day now it wont do anything just one yellow light on...


Ok to troubleshoot it, connect the PSU to the MotherBoard ONLY, test, you may find that with it connected to the MB only it doesn't work, remove RAM and check, if PSU still No Go then MB is faulty if OK, add devices, DVD, Hard Drive, one at a time untill you find one that stops the PSU, that is ya faulty bit. replace it.

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The motherboard not give any display !


last 2 things to do
1.remove the cmos battery
2.remove the cmos jumper.
remove power cable from power supply.
3.wait for 2 to 3 mins

4.put the jumper back to the correct position usually pin one and pin 2
5.try to start the mb if ok
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Dell Inspiron 9100 Laptop will not turn on.


Hi,
Please try the following DIY to confirm the part
1.remove the battery and check on adapter mode.
2.If not powering on then check with refixing the battery.
3.if no use then check any LED is glowing,check with taping the num lock and if the LED responds then this is the memory issue otherwise a MB issue.
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2 Answers

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There are several different solutions for this as posted at this Forum.

http://www.tomshardware.com/forum/51352-2-dell-dimension-8400-wont-boot

1) A lot of people have just removed the Jumper for the CMOS and turned the Power back on and back off and replaced the jumper and/or removed the battery.

2) Several people have reseated the Memory and after booting back up it worked.

3) A few had to replace the Mother Board and CPU but in this instance they had to also replace the Case because the Dell case wasn't really fit for the heat of from the CPU.

4) I had the exact same problem and luckily replacing the Power Supply fixed this for me. I had to cut out the back of the Dell case for the toggle on/off switch but when I tested the old Power Supply it was only getting 5amps and this was causing the Amber/Orange/Yellow light to constantly flash.

I hope this helps!

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1. Remove all USB devices such as printers, mp3 players etc etc.
2. Remove the power-cable and the battery
3. Press and hold the power button for 30 seconds
4. Put the power-cable back in but not the battery and none the USB devices.
5. Turn the computer on

Also check the condition of the USB ports if it doesnt work and the fuse. If this doesnt work then I would recommend a repair.

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Check the fuse, if thats ok then try this -

1. Remove all USB devices such as printers, mp3 players etc etc.
2. Remove the power-cable and the battery
3. Press and hold the power button for 30 seconds
4. Put the power-cable back in but not the battery and none the USB devices.
5. Turn the computer on

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