Question about Dell Dimension 5150 (DIM515MIN) PC Desktop

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Computer wont turn on

When I press power button, it just blinks with a orange light. I took the power supply out and checked with a electrician, he said it is fine. So I put it back, but the same thing happens. Also when I plug the power cord and turn the switch a green led light inside the mainboard is lit. What could be the problem? Can you give me a solution? Thanks

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  • tcombs Feb 15, 2008

    i am having same problem with my computer changed battery , checked surge proector, dusted it and checked usb ports still nothing . haven't tried power supply hopefully i can comeup with solution

  • Anonymous Jul 22, 2008

    when power button is pressed a flashing orange light no startup

  • trop4 Jul 24, 2008

    Same problem I've been experiencing for several months now with my Dell Dimension E510. Unplugging all the USB and network connections seem to help but I've finally resorted to never shutting it down but using the stand-by mode each evening. It's very frustrating because due to recent thunderstorms, I turned off the computer and now I can't get it to turn back on at all! It keeps flashing the orange light.

  • Anonymous Jul 24, 2008

    My Dell 5150, went into safe mode too, and it won't power back up :(
    Help me.
    Also I have too DVD drives, my DVD player works fine but my DVD RW doesn't play or Burn etc.

    I wish I got that Mac I wanted now!!!!!

  • Anonymous Aug 31, 2008

    same as everyone else, the computer will not power on straight away. Found that if I left it for a while with the orange light flashing it would eventually come on with the next press of the power button, but now even this is getting worse.Is this a common problem with the Dimension 5150?

  • m1stwr4ith Oct 01, 2008

    Dell Dimension 5150 will not power on.  All that happens is the power butten blinks yellow.  I opened the case and there is power to the motherboard because the green light comes on.  This happend once before about a week ago but I unpluged it for about 6 hours and when I pluged it back in it booted up fine.  It was shut down properly when it was turned off last.

  • Anonymous Oct 20, 2008

    no power whatsoever only a green light on the mother board (only hookup is the power cord), no keyboard or anthing else hooked up and green light is all that will come on.

  • Angelmosthet Oct 28, 2008

    I looked at my usb ports and they all look the same, no bent pins that i could tell. What else could the problem be?

  • Anonymous Oct 29, 2008

    I was having the same problem. I was given a Dimension 5150 and it wouldn't power up. The light was green on the MB. I installed a new power supply and had no luck. After running a Google search I found this wonderful website. As recommended I checked the USB ports and found one of them was broken. The center of it was broken out. I used a small screwdriver to pry up the pins. Presto, the computer booted up and away I go.

    Thank you very much. That saved me hours of troubleshooting.

  • drudude1983 Oct 29, 2008

    i have the same power up problem with the annoying flashin light try'd all i can think 2 get it to work an no luck,have looked at the usb's but they all look ok the only thing i think it might b is power cable to the monitor is alittle twitchy an turns the monitor off every now an then? could this be why?

  • bknutson Dec 11, 2008

    I have a Dell Dimension 4600, it wont start up. green light on the MB is on. I tested the wire harnes from the power on button to MB, it checks out OK. I have the side cover removed so when I push the power button on and nothing happens I fiddle with the wires sometimes it will strat. The most recent time it was wird I could hear the fan on the power supply start then stop continuesly. I then pushed the start button again and it booted right up. I an so puzzled.


  • vieja2010 Dec 11, 2008

    I have the same problem with a 5150 Dimension Desktop. No power what-so-ever. Had Geeks on the way or go or whatever come out. Power supply is fine....they say it is the motherboard. He had me call Dell to get a cost etc on motherboard. Was on the phone for over 2 hours being transferred from one place to another (By the way.....the parts department doesn't deal with Motherboards????) I was finally able to order one......but......too bad for was sent for production 4 months ago and is still not ready. Even worse, I gave a different shipping address as we were going to be moving. The girl confirmed the address, but forgot to change the shipping address. Now I am told the product is still on backorder? but they cannot change the shipping address. If I need them to change the shipping address they will have to CANCEL my order and reenter it. So I did that. Now....sorry .... the part is no longer available. I will NEVER buy another Dell again

  • Tmerg Dec 13, 2008

    I am also having the same problem where I get the flashing orange light when I try to power up my Dimension 5150. There is a green light on for the motherboard. I checked the USB and everything looks good. Does anyone have any other suggestions?

  • wackyzachy23 Dec 13, 2008

    i was having the same problem with the desktop blinking an amber light and found that it would do this when i turned the computer off. so after repeatedley pressing the power button it turned on one time, so i just left it in stand-by mode for about 3 weeks. Then one day it just turned off by itself, but the amber light won't even blink anymore, it just seems dead, except that the green LED still works on the motherboard.



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I had the same problem here. And sure enough it was the USB socket that had been bent inside or broken off. Basically the pins were touching the sides of the casing and causing it to short on power up.

I used the method suggested above - get a screwdriver and (MAKING SURE THE POWER IS OFF) bend the pins from the USB socket back into shape so they are no longer touching the side casing. The USB port is unusable but the machine powered up straight away and is now working fine.

Thanks for your help!!


Posted on Oct 31, 2008

  • martin waters Nov 01, 2010

    great post bent pins back started stait awy thank alot


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"Then I came across the recommendation to check the USB ports for damage. Saw some of the pins bent inside the port. Once I fixed them, the computer powered back on as normal! Small fix for big problem. Cheers - Parveen"

My wife's Dell E510 also suffered from the orange blinking light on front, and would not power up this morning. I had just purchased a new power supply for another computer and swapped it with the Dell's. To no avail... Put the Dell back together and still no luck with a start. So I came across your site and remembered that recently the 6y'o had jammed a USB port in the front of the Dell and after bending that USB port back into shape every thing works again!

Who would have thought that a free fix would be so easy!


Posted on Sep 19, 2008

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  • 1 Answer guys were was a USB problem. I just unplugged all USB cables, pressed the power on button and up it came. I haven't yet determined if it's a bad USB cable or port.

Posted on Oct 10, 2008

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I had to reset the bios and it finally powered back up. really weird, nearly any time i change power outlets or strips, i've got to reset the bios.

Posted on Sep 12, 2008

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Finally, success, by replacing the power supply. Found one at Circuit City for under $30 and it's fixed - yahoo! Installed the Basiq 350 Watt Power supply and it works perfectly now. Hope everyone else with this problem can get it fixed.

Posted on Sep 11, 2008

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Had same problem but it was due to a bad usb cable, once the cable was removed from the usb port the comp started fine

Posted on Sep 11, 2008

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I had the same problem with the orange flashing light.
Then I got an solution from a technician that the SMPS power is leaking, sounds wierd to me. I checked the motherboard conectivity from SMPS. If you are using any surge protector, just reverse connection or change the port.
Then I came across the recommendation to check the USB ports for damage. Saw some of the pins bent inside the port. Once I fixed them, the computer powered back on as normal! Small fix for big problem.
Cheers - Parveen

Posted on Feb 09, 2008

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Problem is the power button. It is not connecting when you push it.

Posted on Oct 31, 2008

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Posted on Jan 02, 2017

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SOURCE: Dell Dimension 5150 PC



90% of the time, a flashing amber power LED on a Dell system indicates a failure of one of the circuits in the power supply (Usually the lower voltages 5v 3.3 v etc) The power supply is cheap ($40) and should always be replaced before the motherboard ($150) Unless you have a known good power supply for a similiar Dell that get the same results, replace the power supply.

I've seen many power supplies that will pass a bench test, but will still be far enough out of tolerance that it will not boot a Dell.

Posted on Sep 15, 2008

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