Having problems with your Dell Dimension E520 PC Desktop ?

Usb ports not recognizing devices

\015 When i plug certain devices into my usb ports it doesnt recognize them. somethings is wrong with all of my usb ports\015

Answers :

You might be drawing too much power from the usb port, if you're not using a powered usb hub.
Unplug all your usb devices. Go to the device manager and uninstall the usb controllers, then reboot your system and they will be reinstalled. connect the usb devices one by one and try to ascertain which is causing the problem. Some powered devices like printers can conflict with devices that require power from the port, and sometimes there are driver conflicts that can be resolved through the use of a hub, or connecting the devices to different ports or in a different sequence. You may also need to update or reinstall drivers for usb devices such as the PCI bridge. Please see this link for more info on troubleshooting usb. And this for possible cause.
For further reading, see here and here.
If you work through that and still have trouble, write back with the results and we'll help you to sort it out.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
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If they were working before, just reboot. If they never have, I would reccomend contacting whoever you bought the computer from and asking if it's under warranty.
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