20 Most Recent Dell Optiplex 755 Desktop Desktop Computer - Page 3 Questions & Answers

check your Ram,smps,moherboard

Try just rebooting the computer, if not replace the keyboard.

right click the speaker on the right side go to properties add advanced options add mic slider uncheck the mute

install os

My inside temp didn't register this a.m.the other features were fine. I had to go outside to see if the outside receptor was working . It was. What do I do to get it to work inside again?

Have you tried using a different keyboard? there may be an error with your current one

Your Dell OptiPlex 755 does not have a Bluetooth.You can purchase a Bluetooth dongle that will give you Bluetooth on your Dell at the following webpage.Budhttp://www.amazon.com/s/ref=nb_sb_ss_i_0_16?url=search-alias%3Daps&field-keywords=bluetooth%20dongle&sprefix=bluetooth+dongle%2Caps%2C731&rh=i%3Aaps%2Ck%3Abluetooth%20dongle

are you hitting f2 in time during the boot splash?

Following are the various ways to clear the CMOS or NVRAM on Optiplex systems:-The computer must be disconnected from the electrical outlet to clear the CMOS setting.Remove the computer cover.Locate the CMOS battery on the system board.Note the orientation of the battery, usually the plus side is up, and remove it.Wait for 3 to 5 minutes for the CMOS to clear.Replace the battery in the socket.Replace the computer cover.Plug the system and devices back into the electrical outlets and turn them on.And Sec option jumper setting also available you can used:-Turn off the computer and disconnect the power cable from the electrical outlet.Remove the computer cover.Locate the 3-pin CMOS jumper (RTCRST) on the system board.Remove the jumper plug from pins 1 and 2.Place the jumper plug on pins 2 and 3 and wait approximately 5 seconds.Replace the jumper plug on pins 1 and 2.Close the computer cover.And More Support see link:-ftp://ftp.dell.com/Manuals/all-products/esuprt_desktop/esuprt_optiplex_desktop/optiplex-755_user's%20guide_en-us.pdfIf more Technical Support Call.

http://www.dell.com/support/drivers/us/en/04/driverdetails?driverid=2DWTY

Try following the wires from the speaker to the end. It might still have the connector.

go www8.hp.com and download the driver according with your model etc, and fix it. God bless you

WHAT DO YOU MEAN.DO YOU NOT HAVE ANY WIRES TO THE SPEAKERS OR WHERE TO PUT THE CONTACTS ? .AUDIO OUTPUT BACK OF THE COMPUTER ON THE I/O-SHIELD ARE LIGHTGREENWIRES ANY PC-DEALER HAVE

http://www.innovative-sol.com/drivermax/DRIVERMAX 2 FREE DRIVERS A DAY.

If the power light is blinking amber, the computer is receiving electrical power, but an internal power problem might exist.A power supply or system board failure has occurred. Try to isolate the problem by removing or disconnecting all cards, i.e. video, sound cards and disconnecting CD/DVD and hard drives.

http://www.pcmag.com/encyclopedia/term/38515/beep-codeshere are the explenation of beeping-codes.hope it help you.

Step 1:If its xp ? 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 Reboot 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 http://wiki.ljackson.us/Control_Userpasswords2 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 http://majorgeeks.com/CmosPwd_d239.html 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. http://majorgeeks.com/Dr._Freeware_System_Utilities_d6416.html Dr.Freeware System Utilities which includes data recovery software, data backup, password