USB Device not recognized, but usb ports work

[diveprn]

I get above message USB Device not regognized and when I clink for assistance with problem, the screen is blank. It doesn't show where problem is. I just says one of the devices Malfunctioned.My optical mouse quit working but, other things like my printer will work in USB port.
I also have problems with computer not starting. I used F-12 and try to repair it. It can't and I don't know what to do net???

Toshiba satellite model# PSLB8U-0VN037.   Vista windows home addition.

Thanks, Valerie

[Computer_Commando]

...Toshiba satellite model# PSLB8U-0VN037...

Toshiba support has no listing for that model.
http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/home.jsp

[diveprn]

OK the back of it has that as the Model number.
How about the System unit??  L305-S5944

Tell what number you need???

[Computer_Commando]

...How about the System unit??  L305-S5944...

That's the one:
http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=SB&os=&category=&moid=2319628&rpn=PSLB8U&modelFilter=L305-S5944&selCategory=3&selFamily=1073768663

Look under the Downloads tab.

[diveprn]

OK, What am I supposed to download?? I downloaded a new BIOS no change. I foud the problem in my computer under a usb hub but, can;t get rid of it just replace the driver which I did no change. I didn;t mean the usb ports worked the outlets do unless that's the same thing. It is getting harder and harder to start my computer. I am thinking of upgrading to windows 7?
Thanks again for your time.
Valerie