I turned on my computer this morning and the message said this file is missing or corrupt...re-install the file. I downloaded the file from my husband's computer onto a thumb drive. The drive lights up when I put it into my computer, but the message stays...Nothing on my keyboard works when I turn off the computer and back on...none of the F1, F10 etc. keys work, not even esc...When I tried the recovery disc from HP, the CD drive lights up spins, and that is all. How can I re-install if none of the accesses to the computer work? I can't even get into safe mode to fix things. Thanks for any help...Barb