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How can I change a password on a optiplex 390?

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Which operating system ?

Restart your computer repeatedly tapping the f8 key to enter safe mode while the screen is black once in safe mode where the only things working will be your keyboard and mouse allowing you to attempt to repair your computer Windows Advanced Options Menu Please select an option: Safe Mode
Safe Mode with Networking
Safe Mode with Command Prompt Enable Boot Logging
Enable VGA mode
Last Known Good Configuration (your most recent settings that worked)
Directory Services Restore Mode (Windows domain controllers only)
Debugging Mode Start Windows Normally
Return to OS Choices Menu Use the up and down arrow keys to move the highlight to your choice select safe mode with command prompt Click start run type cmd press Enter black screen should open DOS mode this will vary depending on your operating system type in net user username For eg. If you want to change administrator password , type net user Administrator It will prompt you to enter the new password. Enter the new password and the password is changed if this fails you will need to Select safe mode with networking to download you could download all of these or just one save them to a usb drive for later use if one fails to remove the password Windows Password Recovery Basic A CMOS BIOS password recovery tool Editors note: This tool should only be used by experienced computer users. Please see the enclosed read me if you would like to run it from Windows. Failure to follow instructions (from Windows) will cause your anti-virus to flag this as a virus. Dr.Freeware System Utilities which includes data recovery software, data backup, password

Posted on Apr 21, 2013

  • 4 more comments 
  • fatal Apr 21, 2013

    So your telling me that by doing this I can reset the password? For a optiplex 390?

  • Brian Sullivan
    Brian Sullivan Apr 21, 2013

    "you have not stated an operating system" this method works on xp ,vista ,windows 7 How to change your windows password using the command line

  • fatal Apr 25, 2013

    its a optiplex 390 i5 window 7,Tower. its locked completely with user name. i want to know do i have to replace my tower with another new one the that i can be in use of it.

  • fatal Apr 25, 2013

    a new harddrive HDD

  • Brian Sullivan
    Brian Sullivan Apr 25, 2013

    remove the password and you will be able to use your tower computer DELL OPTIPLEX 390 TECHNICAL GUIDEBOOK ... Processor availability subject to change and may vary by region ... Security Strong Password: Disable Password

  • Brian Sullivan
    Brian Sullivan Apr 25, 2013

    Restore disks


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How do I remove administrator password on the BIOS of Optiplex 390

The CMOS contains the current BIOS settings
  1. Turn off the computer and disconnect the power cable from the electrical outlet.
  2. Remove the computer cover.
  3. Locate the 2-pin password connector (PSWD) on the system board.
  4. Remove the 2-pin jumper plug.
  5. Locate the 2-pin CMOS jumper (RTCRST) on the system board.
  6. Move the 2-pin jumper plug from the password jumper to pins into the CMOS jumper.
  7. Plug in AC power to the system and wait ten seconds for the CMOS to clear.
  8. Move the 2-pin jumper plug back to the password jumper.
  9. Replace the computer cover.
  10. Connect your computer and devices to electrical outlets, and turn them on.
Location of the RTCRST Jumper will vary by platform and form factor. For more information about the jumper locations refer to the system service manuals located at

Aug 15, 2016 | Dell OptiPlex 390 DT Desktop Computer...

1 Answer

Asking for enter your correct password or administrator password 2 time only

Hi saifi this is expert to help you Call +1(404)981-1535 I will be glad to assist you thanks

Jan 05, 2016 | Dell OptiPlex 390 SFF Desktop Computer...

1 Answer

Asking for enter your correct password or administrator password 2 time only

Hi this is Alex Walker expert to help you Call +1(404)981-1535 I will be glad to assist you thanks

Jan 05, 2016 | Dell OptiPlex 390 Intel Core i3 2120...

1 Answer

Gotta dell from a man who died hut it has OptiPlex 390 installed on it and I was wondering if anyone can help me with a password or default password as the man I received it from passed away

if the password is the system pc then its easy there is a jumper on the mother board you change to reset the bios password
if the password is in windows then you need a disk or try F8 before windows starts up an choose safe mode and administrator
thats all im allowed to tell you

May 09, 2015 | Dell Computers & Internet

1 Answer

How do I delete or reset a new system password, and a HDD password so that I can set a administrator password on a optiplex 390 i5 window 7.?

If you do not have the current passwords, it's going to be a bit of a problem. The BIOS password mostly. Contact Dell Support: Perhaps they will give you a one-time BIOS password. If it's a login password, you could try a Full Factory Recovery. If someone put the passwords in , I would ask them, that's the easiest way.

Apr 25, 2013 | Computers & Internet

1 Answer

Lost administrator password

load linux sideways and crack/bypass the password (most simple method)reinstall osloved these little things so small and cool, but the whole removable rom and floppy sucked kinda, more questions just ask good luck

Mar 30, 2013 | Dell OptiPlex 390 469-1605 Desktop PC -...

1 Answer

Using Bart PE with OS/xp can not find network drivers for optiplex 390

Try and use the drivers available in the "Driverpack solutions" available on the web. you need to look for DRPS 12.

Feb 12, 2013 | Dell OptiPlex 390 DT Desktop Computer...

2 Answers

I need ethernet drivers for dell optiplex 390 running on win 7 ultimate please

Try dell's site. If they don't have window's 7 drivers, try the vista drivers.

Get onlineand got to In the google search box type: "DellSupport" (without the quotes and put your manufacturer name before Support). Look for downloads and drivers. Enter your model number and operatingsystem when requested. Download and install the Network drivers.
You can also try Driver Guide at:

May 31, 2012 | Dell OptiPlex 390 DT Desktop Computer...

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