Hello everyone, I have a 64GB Windows 7 64bit home premium asus ep121 tablet. One of my usb drives stopped working, so I disabled (not uninstalled) the drivers for my usb drives, and clicked through the warning. I would just shutdown the computer and restart and the drivers would re-enable themselves, right? Wrong! _Both_ usb drives shut off, and the touchscreen stopped responding and the pen stopped working! I restarted: no change. As soon as windows 7 boots, all input stops immediately except for the buttons on the device itself. I started the computer in safe mode--difficult to do without peripherals--same thing happens. I've tried system restore. I've done the two button reset. I've pressed in the reset between the usb ports. The computer continues to boot up fine--minus input. I can even launch the onscreen keyboard, but the usb drives are stubbornly shut off. Most recently, I have been trying the repair disk I had made earlier per directions. I can get into the computer through the repair disk (the computer booting to the repair disk, whose files I've put on a flash drive, so the keyboard and mouse work in there), by navigating out of drive X as it is called, and into C. I can launch only a few kinds of programs in this very restricted environment: the cmd prompt for 32 bit (not the one for 64 bit), regedit, the calculator, and notepad. I opened up regedit as administrator, and found the keys which concern the usb drives. They were set all set to 4--off--I changed them to 0 or 1 and exited and restarted, now booting from C. Nothing had changed, peripherals were still dead, so I went back into regedit (as administrator), and found that the keys had reverted to 4! I've tried to use the cmd prompt (as admin) to change permissions and ownership in hope of making the changes stick--no success. I've run a couple of scripts for changing permissions which I downloaded off another computer and put in the flash drive. Again, nothing. The values can be changed, but revert as soon as I reboot. I have the recovery DVDs. But I can't stop thinking it's overkill to reinstall the OS simply because a driver is disabled! I think the first disc is the OS and the second is drivers. Questions: Is it possible to load and reinstall drivers using the second disc without having to reinstall the OS? Can the buttons on the machine be reprogrammed to move the cursor? (So I can re-enable the drivers that way.) Is there some other way to change permissions? (So I can re-enable the usb drivers.) Is there some other way to get my drivers working again? Any help you can give is greatly appreciated.