USB problem with Satellite P100-219

I have problem with USB flash memory on my Toshiba. Al devices on USB are workig except usb memory and external hard disc. USB and hard are OK. When I connect them it says USB device not recognized. I have win 7 ultimate, but I've also try XP and it is not working not under XP or Win7.
Can it be BIOS related. Bios is Phoenix 4.80, last update from Toshiba support. Motherboard drivers are also updated. But in BIOS I don't see any USB fucntion?
Anybody have any idea? (all common metodhs like uninstalling drivers or similar are already done)
Thx in advance
Tom

1. No. I was istall new instalation of XP. Usb still not working. After that new instalation of 7.
2. Yes, all was working till BIOS update. Now works everything (mouse, printer...) except any mass storage device (hard and usb sticks)
3. Yes
4: Only when mass storage device (usb, hard) it show unknown device
5: I was told in first post that I allready try delete, reinstall and everything simillar
Thx

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If it is taking that long to recover and you still have issues I would use your recovery media that you should make if you have not did so already. As Toshiba suggest it is best to make the recovery media when the laptop is new because it can become infected by a virus just like your main operating system.
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