Question about Dell OPTIPLEX 960 MT Desktop Computer (Intel Core 2 Duo E8400 250GB2GB) (BO5SC306)

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Optiplex 960 error codes 1 and 2 at startup - Dell OPTIPLEX 960 MT Desktop Computer (Intel Core 2 Duo E8400 250GB2GB) (BO5SC306)

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How do i reboot a dell optiplex 960 to factory settings if i cannot login?

How to enter BIOS?
1. Turn on or restart your computer.
2. Press "F2" to enter "System Settings" (BIOS) when the DELL icon appears.
Restore the BIOS to default settings.
Press "Caps Lock", "Num Lock" and "Scroll Lock" buttons to light up the corresponding lights on the keyboard. Then, press the following three combination keys:
Alt+E - Clear (Release) the interrupted resources and reallocate resources at next startup. After pressing the combination key, you will hear a sharp beep tone.
Alt+F - Restore BIOS to the default settings. After pressing the combination key, you will hear a sharp beep tone.
Alt+B - Restart the system.
Password clearing method 1: When the password input box appears, type in the password and press "Ctrl" and "Enter" simultaneously.
Password clearing method 2: Remove the PSWD jumper on the MB and start up the system. Set the password to empty in BIOS, shut down the system and reconnect the PSWD jumper.
Hope this method will help you otherwise check Dell Optiplex 960 Manual- for expert's suggestions.

Dec 24, 2016 | Dell Computers & Internet

1 Answer


Hi Tiffany,

it sounds like there has been some sort of corruption of the files on the hard disk. You should see about booting from the Windows installation CD / DVD and copying all the files that are of importance to you (documents, photos, music, etc.) on to an external hard drive connected to the USB port or installed as a slave drive internally. Once you have saved all the files you need, shut off the PC and disconnect / remove the drive with your files. Then reinstall Windows again. Once done, shut off the PC and reconnect the drive with your files and copy them back to the hard drive and you should be good to go unless he drive is beginning to fail - in which case purchasing a new hard drive would be a good idea.

Aug 10, 2015 | Dell OPTIPLEX 960 MT Desktop Computer...

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2 3 4 orange blinking lights/ automatic start up and forced shutdown/ optiplex 960

Log in to: and send this info to Dell. As I recall lights 2,3,4 are either memory or HDD failure.

Run Diagnostic Run Diagnostic Diagnostics can be run on supported Dell devices with a full version of Windows.

Already have an error code from running ePSA diagnostics?

Dell devices come with preboot diagnostics to capture error codes. If you have already run a preboot system assessment (ePSA), enter the error and validation codes with your Service Tag below and complete the steps to resolve your issue. Enhanced Preboot System Assessment Error Code (without 2000-prefix) * Validation Code * Service Tag * Part Serial # (optional) ; ;

Mar 28, 2015 | Computers & Internet

1 Answer

DMA page register read/write failure

According to Dell you will need to run their diagnostic utility to find out what is really causing this error code

read the part about how to start dell diagnostic

Feb 26, 2015 | Dell OPTIPLEX 960 MT Desktop Computer...

1 Answer

I have dell 960 switch it on but light turns to orange

Could be several things.

1. could be the power supply
2. inspect the motherboard for bad caps.

If the above is OK. Try removing and reseating the CPU, Memory and CMOS battery.

Apr 15, 2014 | Dell OPTIPLEX 960 MT Desktop Computer...

1 Answer

OPTIPLEX 960 error codes 3 and 4 at startup. Solid amber light.

"optiplex 960 error codes 3 & 4 at startup"

Found out by myself the google suggestion to look up the Dell Diagnostics page:
Lights 3 & 4 means "Memory modules are detected, but a memory failure has occurred." Bingo! I didn't actually replace memory sticks, but pulled them out and put back in one by one. Only three out of four sticks were accepted. Works.

Jun 05, 2012 | Computers & Internet

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Service 960 memory error- r for my Lexmark C532n printer

A 960 RAM MEMORY FAILURE message indicates a failure of the RAM MEMORY that is soldered onto the printer's main controller/system board.

If the printer is displaying a 960 memory error.

1. Power off the printer.
2. If you have any extra memory SIMMs or code SIMMs installed in the printer, remove them.
3. Power on the printer.
4. If the 960 error continues, the main controller/system board will probably need to be replaced.
5. If the 960 error does not return, try printing a few documents.
6. If these documents print correctly, the cause of the 960 memory error is probably one of the SIMMs you just removed.
To confirm this, do the following:

1. Turn off the printer and reinstall each SIMM one at a time.
2. After you install each memory card, power the printer back on and try printing. If the error returns as soon as you install a particular SIMM, that SIMM is probably the cause of the error message.

Nov 08, 2010 | Lexmark C530dn Laser Printer

2 Answers

OPTIPLEX 960 error codes 1 and 3 at startup. Both numbers and power button are amber blinking. Doesn't boot. Nothing on screen. Please help auntie.

Blinking amber ... seems like an isuue with the power supply .. check if you see the power supply fan spinning at the back of the system tower... If its spinning then you could try reseating the memory modules inside the system tower . Opem the tower and then disconnect the green colour ruler shapped modules which has a latch on either sides. then try turning in the system ... check if turns on properly.

Hope its informative.

Apr 01, 2010 | Computers & Internet

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