Question about Dell Dimension 5100 (D51L1) PC Desktop

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Restarts My Dell 5100 keeps restarting on its own over and over befor it even starts up

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  • texassharon May 26, 2008

    I have been dealing with this for two weeks now. After two days of over 300 minutes on the phone to India...holding on minute after minute...unplugged everything but the luck...replaced the power supply ($87 from Dell...only refurbs available...) still gets going and then shuts down and tries to reboot ...eventually, it won't even show anything starting up on the monitor...just reboots over and trying to start a car. I have been told by the tech in India that my hard drive and motherboard need to be do I know this??? Have you had any luck with fixing yours? Please let me know.

  • Fra Tro May 11, 2010

    May I ask:

    What operating system are you running?

    Has this happened before? Kinda in a gradual way?

    Have you recently installed any software? "this includes updates."

    Have you tried to start in Safe Mode?


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Check the RAM. Might be dead. Try replacing them...should work

Posted on May 10, 2008

  • Swilin Sampson
    Swilin Sampson May 31, 2008


    This thread has gone 14 days or more without a response.
    Please close the thread with a “FixYa” or “Helpful” rating.

    Or post back with latest developments, what steps you took,
    etc. and I will assist you further as best I can.

    Thank you.



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Restarts continously

Does the system manage to boot at any point? If it does and there is a period before it restarts the system could be overheating. I would ensure all cooling fans and heatsinks are clear of dust/debris.

If you are unable to boot to Windows, try starting in safe-mode. If you can start in safe-mode it will be a strong indication there is problem with your software. At this stage in safe-mode I would first of all try a system restore back to when my computer last worked, if you have no success I would then suggest a virus check/clean in safe-mode.

If you find the system won't even start in safe-mode I would check your RAM is seated correctly, and if that doesn't solve your issue proceed to check/test all other components of the computer. Being a DELL if you press F12 during start up I believe you can ask the system to do a hardware diagnostic test.

Mar 20, 2014 | Dell OptiPlex 780 PC Desktop

1 Answer

Before it starts fully the computer starts then stops starts then stops again then finally starts and boots correctly

Do you mean powers down and then on agan or boots windows fails and then restarts?

If it's powering down then it usually means you either need a BIOS upgrade so check the DELL website or your computer needs internal cleaning as the dust is causing issues.

If it's restarting from windows then hit f8 repeatedly when you see the windows logo and select safe mode with command prompt at the command prompt type:

sfc /scannow

and hit enter.

Sep 05, 2010 | Dell Inspiron 530 Desktop Computer

1 Answer

My Dell Dimension 8200 PC keeps re booting itself once it gets to the home page. i cant even hit the start button cause it restarts itself that fast! please help

As soon as u see the black screen...hit F8 repeatedly to get it into Safe Mode.....then go to system restore and reboot/restore system back on a saved day. Then run your virus protection and scan for malware. This should get you back online. You may need a full system scan to locate the effected DLL's anmd killl off your intruder.

Jun 23, 2009 | Dell Dimension 8200 PC Desktop

2 Answers

XP Keeps rebooting with LAN Cable connected

Have you tried going into the bios setup before windows loads up? You may have a setting to choose startup on lan. Just turn that off and hit F10 and enter.
To enter the bios setup keep pressing delete after truning on the computer until the bios screen appears. Don`t change anything unless you know what you are doing.

May 14, 2009 | Dell Dimension 5150 (DIM515MIN) PC Desktop

1 Answer

Fan cycles to high speed

change the settings in BIOS, while the computer restarts, quickly press F2 or the DEL key on your keyborad (it depends on the computer which button is to enter BIOS), there you can change the fan speed to work at which speed, but beware with the settings, you might spoil things up, find for Advanced settings tab and you may find it there.. was that helpful?

Feb 24, 2009 | Dell Dimension 5100 (D51L1) PC Desktop

1 Answer

My pc keeps on restarting.

Tap the F8 key when booting up. This brings you to a screen with different options. Choose Use last known good configuration. this should solve the problem. Your system is stuck in a loop.

Please don't forget to rate me.

Feb 02, 2009 | Dell OptiPlex GX280 PC Desktop

1 Answer

Start up problem that will not allow windows program run restarts

send me the error that comes out when you start your laptop so that we can analyze that problem.

Dec 18, 2008 | Computers & Internet

1 Answer

Computer wont start and is showing bootmgr missing how can i fix this We had a lightening storm recently. My 5100 was plugged into a surge protector. Every other device connected to the surge protector is...

Its not the surge protector problem.
1. Starting your computer press the F8 function key
2. Select Safe Mode
3. Select the restore point and restore the last updations you had done by selecting the date
4. Wait for a time to get confirmation
5. It will restarts the system.

If the above steps are not worked you need to re-install the OS

Let me know that your problem is solved and rate me as fixya! 

Jun 21, 2008 | Dell Dimension 5100 (D51L1) PC Desktop

1 Answer

Dell Dimesion 9200

it could be the corrupted OPERATING SYSTEM
to be sure
turn off the system
when you power it on start tapping F2 key
it will go in syatem setup
leave the system and monitor if it turns off or restarts
if it doesn't get your operating system reinstalled
and if it does restarts of shuts down we have to troubleshoot further
provide me your system's service tag located at the bottom pannel of your system, turn it upside down you will find a bar coded sticker which has a 7 digit alphanumeric number

Jun 05, 2008 | Dell Dimension 9200 PC Desktop

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