I have an Asus 900hd netbook that I just bought from someone a couple weeks ago. I somehow managed to get a virus on it and I don't have an external CD drive to reinstall the OS so I figured I would try putting the OS on a USB flash drive and installing it off of there with the USB as a bootable device. So I changed the boot sequence to boot the removable device(USB) as the first priority. After doing that I restarted my netbook and it shows the BIOS like its about to boot but then I just get a black screen with a little white line at the top then it doesn't boot at all, just a black screen. So I tried changing the boot sequence back to its original state, with the HDD first but I still get the black screen >.<