There are 2 usb ports on my case that don't pick up any device plugged into them, thinking that it must be the ports on the case i replaced the case but still have the problem . The back usb ports are fine. Thiking that i might have wired them incorrectly i took it to the local pc shop but the wires were all correct. I am running Windows XP service pack 3 but the problem was around before with service pack 2. My local pc shop has suggested a clean install because coupled with the usb problem i am also unable to delete unwanted programs leading them to believe that there may be a virus at work. Would a virus cause my usb problem?
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I've never seen 2 front USB ports that were bad. I've seen 1 that was defective because the USB device that was plugged into it was broken off. However in that case it caused the power supply to short out and prevent the computer from powering on. Here is a link to your model: ftp://ftp.dell.com/Manuals/all-products/esuprt_desktop/esuprt_optiplex_desktop/optiplex-760_Service%20Manual_en-us.pdf If the USB ports on the back of your computer work then the front ones should too unless there is a connector dislodged to motherboard. All USB ports use the same circuit.
You can generally use any USB port to support a USB device. There are minor details such as speed but the computer will generally tell you if you plug a device into a slow (USB 1.1) port when the device will work better with a USB 2.0 or 3.0 port.
The newer your computer, the more likely it is that you will have all faster ports.
I thought the front was for a microphone and headset. I don't think those are speaker jacks. Look closely at the icon that is next to the pink and green on the front, does it show the icon of a microphone and headset?
Normally the speaker jack will show and arrow going out which means sound going out. If you look at the speaker port in the back of the computer it is normally the light green port. Notice the icon on it. Does the icon on the front look the same as the one on the back? Is the color on the front the same as the one on the back? I think you're plugging into the wrong port.
Make sure you have the volume up in your Audio/Sound properties and make sure you don't have the speakers on mute. Also make sure you turn the speakers on and turn the volume up on them.
If you are using the front USB ports, some motherboards and/or cases do not support 2.0. Try and plug the device into the back to see if it resolves your issue.
If you are using the USB ports on the back side of your computer, and still experiencing your issues; go to your PC or motherboard manufactuar's website and make sure you have the updated chipset driver.
If you have recently formatted or opened your case, this might just be a case of some wires not pluged in correctly, or chipset drivers not installed. Try installing chipset drivers again, if that does not work open your case and trace the wires back from the front panel and plug them out and back in again. Really hope this can help you.Please rate this.
It does sound like your ports on the front might be bad. They usually connect to a seperate port on the motherboard than the rear ones, and I have seen devices short out the front ports, such as a USB music player.
You can remove the ports on the device manager, and they should come back ok, without worry. However, I doubt that is going to help the front ones. I think you have a hardware problem.
If that is the case, the easiest solution is to get a USB hub, and run a USB cable from the rear, to the front of the computer.