Question about Dell Optiplex 755 Desktop Intel Celeron Processor 440 80GB/10

2 Answers

Dell optiplex 755 no power

Power button will not switch pc on but reset button on power unit will start it for a few seconds then cuts out.

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  • robins_nest1 Dec 02, 2012

    Not managed to find answer yet but still trying.

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2 Answers

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  • Expert
  • 122 Answers

You can also have a faulty power supply. I've seen many dells meet their demise with junk power supplies. If you are able, and you have the time, try a different one inside of it. it will need to be about a 300 watt 24 pin ATX style power supply with a 4 or 8 pin CPU power plug. (depends fully on what the board calls for.)

Posted on Dec 01, 2014

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  • Dell Master
  • 7,627 Answers

Sounds like the PSU. Test voltage at plug.

Posted on Nov 30, 2012

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Posted on Jan 02, 2017

fredtmccoyjr
  • 380 Answers

SOURCE: the OPTIPLEX 755 will not start

Open the case and look at the little black round things that look like soda cans. Those are called Capacitors. they are kinda like small batteries. They should have a shiny silver top. If they have anything oozing out or if they look like theyve popped like a popcorn kernel, then you have a faulty board. If your pc is under warranty, call dell asap. its an easy repair and its done the next day.

Posted on Jul 21, 2009

reactman
  • 297 Answers

SOURCE: when you switch on the pc(dell optiplex gx 260),

Pop the case and make sure the video card, RAM, and CPU is all seated correctly in their slots, and then make sure all fuses you can see inside/outside the case are in good shape (if applicable)

Posted on Jul 06, 2010

Geekman
  • 32281 Answers

SOURCE: sound for dell optiplex 755

You can download the drivers from Dell WEB site, the support download page. Make sure you select your model laptop, better still, type in the Service Tag number, it is printed on the label on the bottom of the laptop. This will open the page where the specific drivers for your model laptop are located. Also make sure you select the Windows XP or Vista version of the driver for your Windows operating system.
Click on this link :-
http://support.dell.com/support/downloads/index.aspx?c=us&l=en&s=gen

Posted on May 23, 2009

Gutdope
  • 4 Answers

SOURCE: Dell Optiplex 755 does not boot. The steady yellow

I have the same issue, in my case, in some Dell's I get a loud FAN noise as well, so far except for the FAN issue replacing the PSU had no effect so I think it is the MB/Proccessor. Recently dusting out the Processor worked on one of the mis-hap Dells which has thuis issue. I personally think Dell tech's should look into this and post some working base solutions!

Posted on May 25, 2010

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1 Answer

Optiplex 755 flashing orange power button light only


Sounds demanding. I would like this solution sounds better. Capish?

http://support.dell.com/support/edocs/systems/op755/en/UG/HTML/trouble.htm#wp1303994

Bad Power Supply -> Replace

(Also FOLLOW Anti-Static Precautions, and to include clean out the inside of the computer)

Regards,
joecoolvette

Aug 27, 2012 | Dell Optiplex 755 Minitower Desktop...

2 Answers

HiI have a dell desktop and won't start. for a second the fan spin than the power button turn yellow. help


hi,
Does your desktop is making any beap sounds? Are you able to see the dell logo on the startup on the screen? Please do let me know these things.

Mar 08, 2012 | Dell OptiPlex GX280 PC Desktop

1 Answer

Please my dell optiplex 755 does not power but the on-board light is on. it only has a yellow light always blinking on the power button. how do i solve this problem?


Replace the power supply.

Generally this is a dell diagnostic light feature tellign you the power supply is failing. Have the unit tested and get a replacement.

Jan 24, 2011 | Dell Optiplex 755 Minitower Desktop...

1 Answer

Dell 755 gives orange light on the on and off button when switched on and it does not start the moniter?


problem with system board ,kindly if Ur PC is not under warranty the open the CPU cover an with out connecting the power remove the memory from the memory slot clean it properly an re fix it then try to connect the power an on then PC try if this work if not then the problem is with the system board u have to get it repaired from a specialist

Dec 15, 2010 | Dell Optiplex 755 Desktop Desktop Computer...

1 Answer

System unit led is yellow and start good condiotion but no signal


HI this could be due to static

do the following

1) unplud all the cables from back of the Tower including the power cables

2) press and hold the power button for 30 seconds

3) put back the cables and check.

May 10, 2010 | Dell Optiplex 755 Desktop Desktop Computer...

1 Answer

Dell E521 blinks on and stays powered up but does not start start up sequence can't F12 or anything as it does not get that far


Just had similar problem with optiplex 755. Solved problem by resetting bios. Remove power cord. remove bios reset jumper. (check owners manual or dell website for the location) Dell says to remove for 5 seconds and replace to reset bios. I find this to be incorrect. I had to unplug cord remove jumper, plug cord in, restart, shut down, unplug cord replace jumper, reinsert power cord and restart. Had to change a few configs in bios based on computer configuration after restart. Hope it works for you. Seen same problem on optiplex 750 and 755 in last week.

Jan 21, 2010 | Dell Dimension E521 PC Desktop

8 Answers

Dell Optiplex 755 does not boot. The steady yellow light on the power switch comes ON but no other error codes on front panel. Machine powers up for few seconds with Yellow light and powers down then wait...


I work at a college and had this same error with a nice few of the Optiplex 755's. However it was due to the power supply failing, nothing with the mother board. Have you tried replacing the power supply?

Oct 15, 2009 | Dell Optiplex 755 Energy Smart Minitower ...

1 Answer

The OPTIPLEX 755 will not start


Open the case and look at the little black round things that look like soda cans. Those are called Capacitors. they are kinda like small batteries. They should have a shiny silver top. If they have anything oozing out or if they look like theyve popped like a popcorn kernel, then you have a faulty board. If your pc is under warranty, call dell asap. its an easy repair and its done the next day.

Jul 21, 2009 | Dell Optiplex 755 Desktop Desktop Computer...

2 Answers

Optiplex 755 flashing orange power button light only


Sounds like you only have power going to your motherboard.

The power supply might be bad on it, that or maybe the power cord is going bad and is only letting a small amount go through. I don't see why there should be a problem if you have even a little bit of power going though.

Jul 11, 2009 | Dell Optiplex 755 Minitower Desktop...

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