Question about Dell Optiplex 755 Ultra Small Form Factor Intel Celeron Processor 430 1.8GHz, 512K, 800... PC Desktop

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Dell OptiPlex 755 wont boot past windows logo cant go to bios

Posted by juan on


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Tudor Valean

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Please see the solution I posted to your other question.

Posted on Sep 24, 2013


5 Related Answers


  • 327 Answers

SOURCE: Not able to find any drivers for Dell optiplex 755 for windows server 2003 OS

Welcome to FIXYA

there are a few websites i use might like to try them is a good one and is also a good one

hope this halps you out ...have a good day:)

Posted on Jul 16, 2008


Rishi Roshan Ali

  • 2427 Answers

SOURCE: Dell Precision 340 will not boot past the bios

It is possible that one of the drives are causing the proble. Disconnect all drives Hard drives, CD, DVD, BLUERAY,Floppy etx and turn the system on if it boots then shut it down and connect the drives one at a time until you find the one at fault.. If this fails then the problem resides in the main board itself, YOu said you cleard the cmos, try reseating the processor (removing and then putting it back) then flashing the bios (clear the cmos) ,, if that fails then you may need to replace the mainboard.

Posted on Nov 29, 2008


  • 51 Answers

SOURCE: my dell optiplex gx200 bios can't boot

maybe try taking out the cmos battery located in your case, looks like a small watch battery, that will clear bios settings and start from scratch, if there is no battery then there is a jumper sequence to do this

Posted on Feb 17, 2009



  • 19396 Answers

SOURCE: Bios default password

The BIOS default password is just blank, and it is not asked.

When you set a bios password, you are asked to enter a value, therefore if bios is asking the password, the password had been changed.

To reset the bios password if you do not know the password you need to access to motherboard and temporarily remove battery for few seconds.
Removing battery will reset bios and delete the password.
Unplug power cord before accessing the motherboard, and try not touching the motherboard with your finger.
Put battery back in place before restarting computer.

See also the following websites:



Posted on Mar 04, 2009


  • 123 Answers

SOURCE: dell optiplex 755 does not recognize the dvd-rom

Try the fix listed here - the Fix It image.

Posted on Apr 24, 2009

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My dell does not support dvd drive for boot

Check in the bios on boot up, it may be disabled.

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It depends on which version of Windows (or other OS) you are running.

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If the loading fails with an error message, try hitting F8 before the windows logo appears and from there Select "Safe Mode". If it works like that, one you're logged in Windows, perform a System Restore to an earlier point in time (when the computer worked).

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How to reset dell optiplex 755 motherboard

Press and hold the F2 key while booting. In Bios, return everything to the factory defaults. This should do it.

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Numbers 3and 4 are lit on front of dell 755 nothing else comes on but fan

I was going to suggest that you have bad sectors on your hard drive that prevent you from booting, but since it won't boot from a CD either it sounds like you have a problem with your BIOS and possibly bad sectors on the HD as well. There's no simple way to fix this if that's the case, so it's best to be left up to a local pc repairman in your area...sorry

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Generally an indication that the Hard Drive isn't detected
Things to check, go to BIOS F2, reset defaults and reboot, see if the HDD is seen. If it is, the battery on the motherboard is likely dead and needs replacement (Watch battery at Walmart, 3 dollars)
If the HDD doesn't detect after resetting the BIOS, then most likely a Hard Drive failure

May 18, 2010 | Dell OptiPlex GX110 PC Desktop

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Have a problem with Optiplex 755 where i got a virus and now i cant use f2 to get to seetings, i cant use f12 for boot options, and i must not have cd in boot order, because the win7 cd wont boot on...

You could take the CMOS battery out of the motherboard, unplug the power cord and hold the power button in for about 20-30 seconds. Plug it back in and turn it on without the battery in it and it should come up with the bios. Turn the machine back off and reinstall the battery. When you turn it back on you should be able to press F2 for setup or F12 for the boot menu.

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Does a firmware update for dell optiplex 755 optical drive fix intermittent rebooting issue

dell 755 drivers page

your looking at the wrong firmware

optiplex 755 current bios version: A10 date 6/20/2008

for the CD Drive need to open device manager and check

what brand and model you have for dell used 2 DVD drives
b0a7e29.jpgsony and teac

use the correct firmware on drive, if not the drive will be killed.
if unsure open case and look for name/model on sticker of drive

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