Question about Dell OPTIPLEX 745 PC Desktop

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I have a system dell optiplex 745 , problem is that when i connect the power cable on my system , system is ON and not display on monitor? secondly i press the ON/OFF Switch but system is not OFF?

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  • Arish Shareef
    Arish Shareef May 29, 2010

    Could you provide more details about the problem? Eg: The monitor model, Operating System, etc.When did u start observing this? Have you changed any setting on the Operating System?

  • mknawaz29 May 31, 2010

    View Sonic monitor, windows xp professional service pack 2, last time i restore company default setting in cmos setting. after that this problem occurs.
    plz help me out??

  • Arish Shareef
    Arish Shareef May 31, 2010

    I think I know what the problem is. Do u have a graphics card installed?

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  • Master
  • 10,406 Answers

Press the ON/OFF switch, and hold it in for 10 seconds -- the computer will turn itself off.

Posted on May 29, 2010

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1 Answer

Screen stays black when powered on


FIRST MAKE SURE THE MONITOR IS NOT BROOKEN
TRY WITH A OTHER MONITOR.
ALWAYS MAKE SURE THE VGA-CABLE IS SEATED TIGHT
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IS YOU SURE IT'S THE POWERBUTTUN.AND NOT THE HDD BUTTON .IT SHOULD FLASH WHEN THE COMPUTER READ.?

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If you want to create a new Basic Input/Output System (BIOS) password on a Dell Optiplex 745, reset the password. Resetting the password also applies if you want to remove an existing BIOS password. BIOS passwords are used to add an additional level of security to your machine. Without the correct BIOS password, your Dell Optiplex 745 will not complete the boot process. The password can be reset whether you know your current password or not.

Turn off your Dell Optiplex 745. Start the computer. Press "F2" the moment the Dell logo appears on the screen. You will only have two to three seconds to press the key. Enter your BIOS password. Navigate to the "Exit" screen. Select the "BIOS Password" setting. Enter your BIOS password and a new password if desired. Do not enter anything in the "New Password" box if you want to remove the BIOS password completely. Press "Enter" to save your password settings. Reset Forgotten Passwords Turn off your Dell Optiplex 745 and remove the power cord from the computer. Disconnect any external hardware and cables. Slide the release latch located on the back of your Optiplex 745. Lift the cover as you slide the latch. Hold the cover firmly and pivot it back on the hinges. Remove the cover from the hinges. Find the "PSWD" jumper on the motherboard. This is a two-pin jumper and should be clearly labeled. Use a flashlight and magnifying glass if you have trouble locating it. Remove the jumper from the motherboard. Replace the cover and slide it into place until the latch snaps into place. Reconnect the power cable and restart your computer. Shut down the computer after it has completely restarted. Disconnect all cables and remove the cover again. Replace the PSWD jumper. Replace the cover. Reconnect all cables and restart your computer.
b> Clearing forgotten passwords http://phubner.eng.ua.edu/Files/Optiplex 745/advfeat.htm - wp1117484

Mar 20, 2013 | Dell OPTIPLEX 745 PC Desktop

1 Answer

If there is a video card in the computer can you still use 15 pin as monitor


The 15pin video connector is an OUTPUT to connect to a video monitor to display what the computer is doing.

Mar 18, 2013 | Dell OPTIPLEX 745 PC Desktop

1 Answer

I boutght used optiplex 745 turn on asks 4 password i dont have


For most Dell Optiplex desktops, the steps to reset a BIOS password and clear all CMOS settings are:
Locate the 3-pin CMOS password reset jumper on the system board.
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My computer is blinking orange light


In addition to the power supply, motherboard issues can cause the blinking power light and no boot problems. The Optiplex 270, 520, 620, 745 and 755 units are all known to have issues with capacitors on the motherboard. Here is a link to an article about this issue and what to do about it:

http://www.ccl-la.com/blog/index.php/dell-optiplex-745-repair/

I hope this helps, if sol please rate my solution.

BuddyMc

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1 Answer

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there is a possibility that you are having no post issu.try to drain power, remove all cables conneted specially power cord then press and hold the power button to drain power on the system. connect all cables try powering on the system. if still no go try using diff monitor if still not showing any indication you might need to have replacmeent for the motheboard.

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