Question about Computers & Internet

1 Answer

I have dell optiplex 755. I am unable to upgrade BIOS, BIOS is needs to be unlocked so I can upgrate BIOS to the latest. Please help.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 335 Answers

Hi Martha,

If you need to unlock/reset bios password, here's what to do:

Unplug the pc and remove the cover. Look at the manboard (the big circuit board inside). look for a round silver button cell battery, about 1.5 centimeters wide. Remove the battery from it's socket and leave it out for 1 hour. Then put the battery back in the same way it came out. Plug in the pc and turn the power on. The bios is now cleared, and you can update it if you like. If this is not what you wanted, or you need more help, reply to me and I can help more.

Hope this helps!

Regards,

Joe

Posted on Jan 03, 2011

  • abbas
    abbas Nov 03, 2013

    Well same problem i m facing ....i've tried almost everything..dos bootable USB, replaced cmos battery , clear and reset bios but still unable to update bios system gives message like "bios update failed, unable to locate firmware in system memory"

  • abbas
    abbas Nov 03, 2013

    it all started 1 week before, everything was working fine suddenely system stop working and was giving display only CPU was turining on with diagnostic lights 3,4 on , i remove the memory and move to different slot then system start giving display but still when i switch the main power on system automatically starts without pressing power button on CPU with 3,4 lights on then i've to power off the system by pressing it's button for few seconds after that i again press power button system starts and works fine...don't know wat's happening..

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Flash bios mdle # opuo52


Select the correct Operating System, and click the down-arrow next to BIOS here... http://www.dell.com/support/home/us/en/19/product-support/product/optiplex-755/drivers

Jul 23, 2014 | Dell Computers & Internet

1 Answer

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.

Jan 27, 2013 | Dell Optiplex 755 Desktop Desktop Computer...

1 Answer

Hi! I have a Dell Optiplex 755 and need to upgrade the current BIOS of A11 to A17. I run the file and it prompts to a password which is unusual for BIOS upgrade. I checked the BIOS setup and it prompts...


the optiplex 775 comes in three models...standard tower, mini tower and mirco tower.

the user manual can be found here:

http://support.dell.com/support/edocs/systems/op755/en/index.htm

find the section in the manual that shows you the components on the motherboard. (I browsed it quickly and found one diagram on page 95) Look for the "password reset jumper". this will reset the BIOS password if any has been entered.

if you cannot find the password reset jumper, the other option is to carefully remove the coin cell battery for about 10 seconds or more while your PC is turned off and unpluged. In doing this you will have to re-enter your bios and reset your time and date information so it is a last resort option.

Jan 03, 2011 | Computers & Internet

1 Answer

For save old bios and install new bios Dell OptiPlex gx620 (from version A05 to A011)


If you are looking to update your BIOS then you can obtain the latest version from Dell. There should also be a step by step guide on how to correctly perform the upgrade. However, unless there is a real need to upgrade your BIOS then you should not have to do this. I have worked on and custom built several PC's and have never had to update the BIOS.

Oct 09, 2010 | Dell OptiPlex GX620 PC Desktop

2 Answers

OptiPlex GX110 PC Desktop: Hello.. I'm having Dell Optiplex machine.When I t...


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

1 Answer

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

Jun 23, 2009 | Dell Optiplex 755 Desktop Desktop Computer...

1 Answer

Configuring dell optiplex 755 sff


on the back of each device their should be a jumper on the right side next to where the ribbon cable plugs in. Remove the jumpers and replace them into the slot thats for "Cable Select" Their should be a picture on the top of the device if they aren't labeled. You can also put the jumper for 1 as "Master" and the other as "Slave"

Apr 20, 2009 | Dell 16X DVD±RW Serial ATA Internal Drive...

Not finding what you are looking for?
Computers & Internet Logo

Related Topics:

652 people viewed this question

Ask a Question

Usually answered in minutes!

Top Computers & Internet Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

kakima

Level 3 Expert

102366 Answers

David Payne
David Payne

Level 3 Expert

14161 Answers

Are you a Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...