Having problems with your Dell Dimension 5100 (D51L1) PC Desktop ?
Dell Dimension 5100 will not power up
\015 The power supply and hard drive check out as OK.\015\012The light on the motherboard is green, so power gets that far.\015\012But when you press the power button, we get nothing. Not boot up, no beep codes. nothing.\015\012Is there a way to test the motherboard and the power button\015
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.
I HAD THE SAME PROBLEM WITH MINE.. I CALLED DELL AND THE GUY TOLD ME TO DISCONNECT EVERYTHING FROM THE BACK OF THE COMPUTER INCLUDING THE AC POWER AND PRESS THE POWER BUTTON FOR 15 SEC.. I PLUGGED EVERYTHING BACK AND IT STARTED UP..THE PROBLEM HE TOLD ME WAS OVER TIME THE COMPUTER BUILDS UP STATIC SO BY PRESSING THE POWER BUTTON WHILE EVERYTHING UNPLUGGED DRAINS OUT THE STATIC..IT WORKED FOR ME AND I HOPE IT WORKS FOR YOU....
Repair Help & Product Troubleshooting for Dell Dimension 5100 (D51L1) PC Desktop
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