To access your bios setup, when the computer is starting you must figure out what key to press.....most times it's the DEL key, Compaqs F 10, some others F 1 or F 2.....if you can't figure which one, then post information on your computer.
Once in the bios, you'll look for something similar to USB support disabled....you'll change it to enabled, save changes and exit.
You might have some corrupted TWAIN files. Nobody seems to know what TWAIN stands for so it is common to translate it as Technology Without An Interesting Name. What it does is form a standard computer interface with imaging devices like scanners and digital cameras. Your scanner software will install TWAIN files if they are not there, but will not overwrite them. An uninstall of the scanner software doesnt remove the TWAIN files.
Uninstall all of your scanner drivers.
Start>Find>Files and folders (C) do a search for twain without the quotes. There should be several still in the Windows folder delete all of them.
Do a search for your scanner and driver like Microtek and ScanWizard or Umax and VistaScan. Delete any scanner files you find.
Umax wants you to empty the recycle bin.
Reinstall the scanner driver software and it should work.
Several scanner makers want you to do the same for TWUNK that you did with TWAIN if the first one doesnt work. Ive never had to do the TWUNK.
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