Question about Dell Dimension 5100 (D51L1) PC Desktop

2 Answers

Installed new motherboard and Dell 5100 and still will not power up

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  • rsm484 Aug 01, 2010

    The problem began when I turned the system off one night and the next morning it was still showing "Windows is Shutting Down" - I powered it off by the front on/off button and then it would not power on again. Maybe this will help in determining the problem... purchased and installed new motherboard - same problem. Green light on on motherboard but system will not power on at all - no diagnostic lights, nothing

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2 Answers

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  • Master
  • 1,035 Answers

Hi. Disconnect everyhting form the PC including the Power Cord. Then darin the electostatic energy of the mmotherboard be pressing the power button for 30secs. Then plugged the powercord back in then restart the computer.

Have a good one!

Posted on Aug 01, 2010

  • 2 more comments 
  • rsm484 Aug 01, 2010

    Did not work - any other suggestions...

  • Angelito Rabago
    Angelito Rabago Aug 02, 2010

    have you checked the computer's power supply? checked the blower if it is turning ON. Just to test if the power supply is ok.

  • rsm484 Aug 02, 2010

    The power supply is working I was told because the green light is on at the motherboard. Dell said it is now the I/O switch.

  • Angelito Rabago
    Angelito Rabago Aug 07, 2010

    There are few things to check would first be to make sure you have the RAM seated in the correct DIMMS. You have dual channel on your MB so the RAM should be seated in DIMM0, DIMM2 or DIMM1, DIMM3 however your DIMMs are labeled. For example, the first module should be in the first Blue DIMM(Closest to the Processor) the second module should be seated in the #3 DIMM (the other blue socket, 3rd from the processor).

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  • Dell Master
  • 4,737 Answers

Well, this is going to be a long process, but let me try my best to be brief.
First of all, (don't forget to disconnect/unplug the power cord) open up the unit, check that both the power cables are connected (most users make mistakes with the smaller 4-pin power connector). After you are sure that they are properly connected, power on the machine. If it's not successful, disconnect all the front panel connectors like usb, front audio, hard disk drive, dvd/cd-drive, etc.. keep the power connectors, cpu fan etc.. connected (cpu installed but without Ram) and plug in the power cord, now take a screw driver and short two pin power switch connector. Can you hear the beep sound? or can you see the cpu fan moving? can you see the power supply fan running? If everything's ok, now install the ram after putting off the machine (shorting the power switch pins or by unplugging the power cord). Reboot the system again. How is it? is it ok? proceed forward, connect the devices like hard disk drive, dvd/cd rom one by one and test the system by powering on every time you plug in a hardware or connector, you'll be able to find out the culprit easily. Do the same with the front panel connectors, like connect the power switch and boot again, then connect the reset switch and boot and so on.....


Please note that cpu could also cause this problem, if it's bad and not functioning properly, this problem can happen.

Let me know the result after this or you'll be able to simply find out the culprit.

Good luck.

Thanks for using FixYa.

Posted on Jul 31, 2010

  • 7 more comments 
  • rsm484 Jul 31, 2010

    Where is the 2 pin power switch connector?

  • rsm484 Jul 31, 2010

    The problem began when I turned the system off one night and the next morning it was still showing "Windows is Shutting Down" - I powered it off by the front on/off button and then it would not power on again. Maybe this will help in determining the problem...

  • Lebanon Raingam
    Lebanon Raingam Aug 01, 2010

    I am sorry for the late reply. Have you tried whatever I've mentioned above? There's another confusion when you say "Where is the 2 pin power switch connector?". You should have done connecting with it when you replace the motherboard. Anyway, take a look at the picture below:








    (One very important thing you should know, if the new motherboard is different from the old one, there would be drivers problem since your hard disk already has drivers for the old motherboard and you'll not be able to boot. If this is the case, your problem is not so tough, just repair the windows using Windows Cd and it'll work fine or boot into safe mode and uninstall all the drivers related to the old motherboard)




    Well, here's another tip, please remove the hard disk and boot in to Bios Settings (Press Delete or F2 or F1 on the keyboard to go into Bios Settings, the key depends on motherboard). Keep it on for few minutes and wait if it switches off itself or not. No problem and the Bios Settings without the hard disk is successful, then the problem is with the hard disk or windows files or files on the hard disk. Turn off the system and Reconnect the Hard disk, now try to boot into "Safe Mode" (Keep Pressing F8 as soon as the system starts booting and select "Safe Mode" using the up-down key on the keyboard and hit Enter to select). Can you boot into safe mode without any problem? then uninstall some least important programs (this time, uninstall all the installed drivers as well) and and run a full system virus scanning, you'll see the result.




    If you can't either boot into safe mode, you'll need a windows cd or recovery cd to repair the windows.

  • rsm484 Aug 01, 2010

    This is new to me - I have installed the Motherboard and followed your instructions but where do I put the screwdriver with the 2 pin power and the 4 pin power and the fan plugged in to jump start? Remember, nothing happens when I press the on/off button - only the green light is on at the motherboard - no diagnostic lights, no fan, nothing going.

  • Lebanon Raingam
    Lebanon Raingam Aug 01, 2010

    After everything is ready, (don't connect the front panel connectors), locate the pins I've shown above, 9 pins (look carefully and you'll be able to see the indicated names like Hdled, Gnd, Reset, Pled etc..). Power on the main switch switch to your power supply and after you are sure that the motherboard get power, take a screwdriver and short the PLED+ and PLED-,(Don't forget to connect both the power connectors to the motherbaord)


    Let me know after you are done.


  • rsm484 Aug 01, 2010

    I have covered the motherboard 3 times and I do not see the configuration that you sent or anything similar on it. Could it be under the fan cooling unit?

  • Lebanon Raingam
    Lebanon Raingam Aug 01, 2010

    I am more confused by you, and it strange that you can replace a motherboard and can't locate the f-panel connectors. Well, look at the picture below, (the f-panel connectors are not big enough to see, since many connectors with pins look alike).. I've indicated the position where it should be. On the right hand side of the motherboard, nearest to the cabinet front part.






    The picture isn't so visible, but I hope you'll be able to get some hints. Good luck once again.





  • rsm484 Aug 01, 2010

    Okay If its there, it is to small for me to distinguish what is what. Is there another way to resolve this issue?

  • Lebanon Raingam
    Lebanon Raingam Aug 01, 2010

    Well, for motherboard troubleshooting measure, this is the most important part and if you don't connect this or if this is the cause of the problem, you can do nothing with your computer. If this is connected properly and the system isn't working fine, we can proceed further. But for now, this is the reason.


    Would you mind if I ask you to continue again after few hours? Actually I need some rest now. I am really tired. Hope you will not refuse.


    Thanks.

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SOURCE: Power problem on Dell Dimension 5100

plz check the ram and powersupply unit and try to reset the bios

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hi there, it may not be the mother board, it may be that the graphics card doesn't have the drivers for your system. Bring it to a computer shop and they will install the drivers for you.

Posted on Jan 31, 2010

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SOURCE: Dell dimension 5100 - usb ports on motherboard are broken

Flashing Amber is normally power supply

http://www.fixya.com/support/r4282412-find_no_post_diagnostic_information_dell

The USB ports are part of the motherboard

Posted on Jun 08, 2010

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