Question about Dell Dimension 5150 (DIM515MIN) PC Desktop

9 Answers

Wont turn on

My dimension 5150 Dell computer will not turn on. It is blinking an orange light and I can see other lights on in the computer when I look at it. I have changed plugs, dusted it, and do not see any problems. Anyone have an idea?

Also, I see a round 30V battery inside the computer. Does this ring a bell to anyone? Wondering if it should be replaced.

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  • Anonymous Nov 01, 2008

    It worked ! Thanks.

    We took the little battery out and replaced it.



    Also we cleaned the copper passsive cooler on top of the main chip - undo the two cross head screws in the black cover then swing the cover up and pull off with the heat sink. It was all really gunged up with fluff which a vaccuum cleaner sorted. Maybe this is risky as the heat sink seemed to have been fixed to the chip with conducting paste which we did not reapply but the heat sink certainly looses a lot more heat now.

  • Anonymous Nov 20, 2008

    won't turn on.

    lights blink and can hear noises, but nothing happening. monitor stays in power-saving mode

  • fixmymachine Apr 08, 2009

    Weird. A customer brought me a Dell Dimension 5100 that had been in and out of a repair shop. The power button was flashing orange and the mobo light was green. After checking the power supply and swapping out components I check ed on the interweb and found the solution of removing cleaning and replacing the CMOS battery and connections worked.

    I'd really like to know _how_ could this work. Happy but surprised.


  • Anonymous Apr 26, 2009

    Although people probably aren't looking at this forum post anymore.. I'm still going to ask a question..
    After all the research I could do, it seems that the problem lies within the CMOS battery. I'm going to pop it out and in again, but I also read it could be something with the USB sockets. I got this message before about a broken USB socket, something with a power peak. It seems that the front USB socket is totally destroyed (probably ran into something like an mp3 player that was sticking into it). I got that message just before I rebooted my pc, and it didn't turn on again. My question is; If it's not the CMOS battery, how can I somehow disable the front panel USB socket, without actually disabling the front panel?

    Cheers and thanks.

  • Ron Manganello May 11, 2010

    Solution #2 worked great! I was ready to go out and buy a power supply. Thanks a bunch!

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I know this is an old post but for the sake of letting others know, I also had this problem with my Dimension 5150 power on button blinking amber and not responding, this was after only buying the machine in April 2006. I first took the base unit to PC World who told me the machine was knackered and i should invest in a new one, unhappy with that answer I contacted Dell who run through this whole process of pull this out, plug this in, power up, press the cd drive button etc.. etc.. all of this narrowed the fault down to a "faulty input/output panel" according to Dell, however i did some more testing of my own and found a small round flat silver battery on the circuit board, i simply popped this battery out gave it a clean popped it back in and my PC fired up first time and is now performing better than it ever has done. The only effect I can tell is that the computer date and time settings reverted to March 2006, which is easily corrected!

Posted on Aug 06, 2008

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You should take a look at the USB sockets to make sure that none of them are broken and touching to earth. Luckly I only paid £30 out for a new power supply, before checking elsewhere when it still failed to start.
This Dell has has USB problems since it was new, so I should have checked here first>

Posted on Nov 18, 2008

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Yeah, the battery. I pop it up and back in and it works again! thanks.

Posted on Oct 31, 2008

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OMG!!! It worked!!! I tried everything else but popping it out and putting it back worked!!! I paid a tech $200 to look at it and tell me it wasnt the power suppy or mother board. Guess time will tell if it just the little battery. Thank you

Posted on Oct 28, 2008

  • multirenta Feb 08, 2011

    thanks for the help this realy work

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The battery that you are seeing is the cmos battery..and yes you need to replace it....

Posted on Oct 18, 2007

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Dont listen to anyone else. Th cmos battery is the only problem. I just did it, and my wife looked at me in awe!
GREAT SITE!, GREAT SOLUTION!

Posted on Apr 24, 2009

I am going to try what Solution #3 and hopefully that works :D

Posted on Jul 31, 2008

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I have a dimension 5150 and have the exact same issue, blinking orange light. I swapped out the power supply and that did not work. I was just ready to get a new motherboard when I thought I would try the cmos battery. I removed the battery for 5 mins and then put it back. Bingo-bango.... the computer started..... The small $3 battery that should last 5 years only lasted 2 years. Everything is good now with a new battery.

Posted on Jan 24, 2008

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The battery you mention is not the problem.
The problem, which is fairly common, will most likely be either the power supply or the motherboard.
If you have a service contract with Dell, you should contact them to have it repaired.
If the computer is not covered by warranty, I would start by replacing the power supply or substituting a known good one.

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Posted on Oct 18, 2007

  • Patrick Wagner
    Patrick Wagner Oct 18, 2007

    Eagle, please provide a good reason the 3 volt cmos battery should be replaced.
    It has nothing to do with the problem, they normally last 5 years or longer and when they do go, they cause problems unrelated to this.
    Let's stick to what will fix this guy's current problem

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