USB Ports Not Working

I recently had a computer crash during a lightning storm, and finally got it up and running again. However, the USB ports won't read any devices, and all of the devices have been checked on other systems to ensure that they are working correctly. From device manager, it shows that all of the USB ports are enabled and working correctly, and I have checked that the drivers are updated and that they are enabled in BIOS. Any ideas on where to go from here?
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was a usb device such as a usb modem or adsl router connected to the usb at the time of the lightning storm. It may have blown the something

But posibly try disabling the device in the bios if they are built in to the motherboard. Restart you pc and let the usb controller to be found with plug and play. See if they work after that
Do you have a USB keyboard, just to test if the USB ports still work (you should be able to use the keyboard to enter the bios during bootup, if that doesn't work, the ports are blown). USB ports are quite likely to give up through lightning storms. If you can verify that way that the ports themselves still work, remove all hardware from the ports and in XP open your device manager, select Universal Serial Bus controllers, and delete everything in there. Then reboot and the drivers should reinstall.
If the ports no longer work, you can buy a PCI USB card:
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 thats a good suggestion about deleting and reinstalling the drivers. I think each usb port has it's own controller, probably on the same chip. The storm may have damaged the usb ports. It depends how much time you want to put into this. If the usb ports are damaged the only remedy is a new mainboard or a pci usb card. If your pc had usb v1.1, here is your chance to upgrade to v2.0. I do not know if this is a personal pc or a pc used in a business, where as we speak you are losing business, in this case you may just want to get a usb card and be done with it.

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All the above suggestions are great and should be tried 1st, I would also check the Show Hidden Devices in the Device manager under View (Assuming you have XP) and then plug in a device and see if it appears or check if it is there hidden before you plug it in. But i'm betting with the guys above that it's probably crapped out and best bet is get a pci usb card since it's very cheap and the fastest way to recover.
If you have a DC volt meter, check voltage across pin 1 (positive) and pin 4 (ground).  Should be 5 VDC.  Here's a diagram that identifies pin placement for USB ports:

I suspect controller is OK but 5 volt power is not being applied to ports.
I have gone trough a storm like that myself and My lan card was frised so I guess the ports are toasted, if when you insert a stick or something else in them and nothing hapends then Toast is the word. There is still a chance though if they were the on board USB cause you have to have on the mainboard extension slot for USB so you can work with these devices. try get an extension USB card
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