Hi, my 3 yr old dell 4600,s usb ports have all stopped working, i have a wireless keynoard and mouse, and i replaced these thinking it was those at first, but by plugging in a memory stick that flashes when being read, i now know that none of the usb ports are any good. i have tried a powered hub, but still no joy
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Re: dell 4600 usb ports not working
Do one thing disconnect all the devices connected to the usb and if possible use a ps2 mouse to do the step i am going to tell you or if u can use the keyboard that would be fine ...
go to device manager and uninstall all that is under universal serial bus ... remove everything that says root hub and than restart the system
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Please add more information to get specific assistance. Are these wireless devices? If wired, do they use USB or PS/2 connections.
For wireless devices, try replacing the batteries and resynching to the receiver. (You may want to check putting the receiver in different USB ports.)
For wired devices, disconnect and reconnect. For PS/2 devices, you will need to restart the computer to check if the devices work. For USB devices, try connecting to different USB ports.
Next step, try using a different keyboard and mouse (that work on another computer (stick to USB or PS/2 to match the current pair)). Try a wired set if the problem is with a wireless pair. If those work, continue diagnostics on the wireless keyboard and mouse. Check if the mouse and keyboard work on another computer. If they don't work with another computer, replace them.
If another USB keyboard and mouse pair don't work in any port, your USB ports may have failed. Check if even one port works enough to access the Device Manager. (Start > Control Panel > Hardware and Sound > Device Manager (Win7); similar directions in other versions of Windows) Check for a problem with the drivers (For USB ports, scroll down to the USB drivers and look for a triangle with a yellow exclamation point or red x). Try to update the driver or roll it back. If that doesn't help and one USB port works, a USB hub may solve the problem.
Otherwise if the USB or PS/2 ports do not work with any devices and the driver fix doesn't work, then I'd suspect a problem with the ports on the motherboard. Replace the motherboard/computer.
It sounds like the motherboard is causing the usb ports to malfunction by allowing power surges into the power input to the ports.You maybe should try a powered usb hub to power your hardware or you may face motherboard replacement
When you replace the Battery on a Wireless Mouse you have to link the Mouse again with your USB receiver. There should be a Button on the bottom of the Mouse that could be marked, Reset, or Link or something similar. Just turn on your Mouse and hold this Button for a few second until the USB receiver finds the signal.
Try moving the mouse receivers usb plug in to another port. Unplug any new devices and restart computer. Then replug in any new usb devices.
If still not working.......
Look at Office Depot and other office stores for a replacement wireless mouse. I have seen them as low a $9.99 on up. You might even want to upgrade and get a wireless mouse and keyboard set.
Go to setup turn on the USB 1.1
The USB port is turned off for security reasons;
You may consider adding a 4 port USB 2.0 adaptor card my server has Both I use the onboard USB 1.1 for external hard drive and mouse
Almost always, wireless mouse makes use of the USB port to connect its base/receiver. Depending on the exact model of the Dell desktop, there would normally be USB ports at the rear of the computer. Some others have 2 USB ports at the front or side.