Dell Optiplex 755 Desktop Desktop Computer - Answered Questions & Fixed issues

You can try to attach the drive with a different USB cable to another computer. That way you will rule out connectivity issues and drivers as a possible cause. In case the issue persists, there is a good chance that something wrong with the enclosure or the HDD itself. In both cases, you can: -RMA the drive if under warranty.

You need to download co-decs for your media player and you can fix it.
Go to codecs.com/download/K_lite_codec_pack.htm ">http://www.free-codecs.com/download/K_lite_codec_pack.htm and click on "Download K-Lite Codec Pack." When you are taken to the download page, select "K-Lite Codec Pack 5.5.4 FULL" and download the associated file. 2 Install the Codec pack to your local hard drive. Make sure to select "full installation." You may be prompted to restart your computer when the installation is complete. 3 Run your normal media player; attempt to play the video file suffering from missing sound. If the Codec pack installed correctly and you are using a supported media player, the sound should now function properly.
Thanks. Have a great day.

easy steps check out the solution

remove Cmos battery for 10 mins, reboot into Bios set dafaults...f10 save and exit

www.youtube.com/watch?v=gHeLn3ciF40

Hi Frank, My name is Pradeep and I work for Dell's Social Media Team. Please start the system in Safe mode with Networking and let us know if you are able to access internet. Go to, Start, Run, type cmd and click OK. Now type ping www.Dell.com. check for packets sent and received. if the loss is zero, then it is issue with web browser. If not, please type the commands below: netsh int ip reset reset.txt netsh winsock reset regsvr32 urlmon.dll regsvr32 softpub.dll ipconfig /flushdns restart the system and let us know the results. Pradeep Lokesh Social Media and Community Professional Order Status: http://del.ly/61822hij Download Drivers: http://del.ly/61832hid

how to remove

The *ONLY* place inside a desktop computer for a fuse would be inside the power-supply unit. Expressed differently, there are *NO* fuses being used.

There is no need to "disable" firmware updates. The computer will only accept "valid" updates. So, how would somebody be able to access your computer, in order to try to update the firmware. Prevent access to your computer, and you will have prevented the firmware from being updated.

go into your Dell Maintenance program, or whatever it is called in the All Programs list under Dell. If it has updates listed then turn off or change setting so that updates are either not done or require your approval/management. Else, if your model does it thru Windows Update, do not do it! Hope that helps.

I used google to search for i/o panel of dell optiplex 755 and got his link http://www.discountelectronics.com/product?gclid=CKTSgfHdscECFeHm7AodD1wA3w&product_id=7297&product_model=18

yes the power switch is called the i/o panel it connects to the system board of the computer by a wire or ribbon cable. You have to unscrew a screw. HERE IS THE MANUAL LOOK ON PAGE 70 http://ftp.dell.com/Manuals/all-products/esuprt_desktop/esuprt_optiplex_desktop/optiplex-755_user%27s%20guide_en-us.pdf

Try the fix listed here - the Fix It image.
http://support.microsoft.com/kb/314060

Probably nowhere. A desktop is not made for that, so I have a Mifi (MobileWifi) Mine is from Vodafone and is a Huawei enclosure with SIM card slot. this Mifi sends out a Wifi signal I can connect up to 5 computers, tablets or desktops with Wifi-card to. so for this solution you need: 1. A Wifi-networkcard in your desktop. Laptops do have it standard, because they are meant to be mobile devices. A Wifi- network card for desktops to be installed inside the desktop. You will need to install also a driver from a disk or download from support site from the manufacturer. http://www.tomshardware.co.uk/forum/24164-43-whats-wireless-adapter-desktop 2. A Mifi where the SIM can be inserted. Do a Google search for mobile hotspot to find a Device for that.

these can be related as the main battery on the motherboard is need to retain cmos setting when a system is unplugged from a/c power for extended periods of time. so the loss of cmos would prompt you about certain components including amount of memory(pending no changes in memory amount/ slot location as a single chip unit must have the mem in slot 1). there is a round 3.0 volt battery that once reports bad, should be replaced. start there and see if you get any other errors. as there could be a problem with the powersupply or motherboard if that doesn't resolve it.

It generally means that the computer can not find its Bios. Try unplugging the computer for a bit and retry. I may work.

Yes, files MAY be recovered from a failing hard drive, however the success depends on how badly the existing drive is functioning. What I would suggest (if you are able to boot into windows) is to go to a command prompt by using the start menu , then in the RUN box type the letters 'CMD' and hit enter. In the box that appears next, type the following text: chkdsk /f /r <then press enter>. The system will tell you that it cannot run the operation on the drive and ask if you want it to run on the next startup. Hit 'Y' then press enter. The next time your machine is rebooted, the system will run a drive scan checking for errors on the drive and repair what it can. That's step 1. Next you want to get your data to a new drive, so you will need to put a new drive in your machine along side the existing drive. You will need to connect a power cable from the power supply wiring harness, and an SATA cable between the motherboard and hard drive. (You may need to go into the system setup in order to activate the second SATA port. You do this by pressing the appropriate key to enter Setup when the computer boots. F2 on the Optiplex. Once you have the new hard drive in, you will need to use cloning software such as Acronis True Image. For this, since the drive you are cloning is probably a system drive, meaning you cannot clone it while you are booted into windows, you will need to create a bootable USB disk or CD/DVD, which can be used to boot to an alternate OS for the purpose of running the cloning software to clone the system drive while the system drive is not in use. There is a free trial of acronis true image here: http://www.acronis.com/en-us/homecomputing/trueimage/gettrial/ and instructions for creating a bootable disk here: https://kb.acronis.com/content/44741 If you decide this is too much work, you should be able to have the same thing done at a local computer shop for around $150 plus the cost of a new drive. (I'd recommend a solid state drive as your new drive). You'll appreciate the performance boost and prices are now pretty reasonable. Good luck!

open it up ..and see what is wrong with the first slot of ram memory ...if the inserted module is not working ...than remove it ..(to check if it works just leave it by itself and try to start the computer ..) anyway ..if there isn't any module in the first slot ..than move one from the last slot ..I mean mount the modules in slots from number 1 to ...as many you have available ...After finish ...restart ..press delete button right the way to go to bios settings ...and in here ..look for optimal factory default settings ..and engage them by selecting with arrows..and enter..and confirm with enter (Y)
to save settings before exit ..press F 10 ..and enter ..
This will assure the ram configuration ...in the correct way ..
Please read careful ..and ask if you do not understand something ...and also ..please rate my answer..cause it helps with my rating and activity on the site..

An Amber (Yellow) blinking power button indicates a low voltage problem. This can be caused by a defective power supply or a defective motherboard. Just to make sure that nothing else is causing the problem, remove any PCI cards like modem, video card, sound card, etc... Remove the memory modules and disconnect cables to CD/DVD drives. Look at the USB ports to see if any are damaged.

A steady or Amber blinking power button indicates a low voltage problem. This can be caused by a defective power supply or a defective motherboard. Just to make sure that nothing else is causing the problem, remove any PCI cards like modem, video card, sound card, etc... Remove the memory modules and disconnect cables to CD/DVD drives. Look at the USB ports to see if any are damaged.