Sounds like your os borked during updates. Options. (Im not at pc so theres not a lot I can check) You can attenpt to boot to a recovery partition on your computer and do a complete restore, usually this would be accessed by pressing F11 on startup. (google it to be honest its different with every model) IF your model of computer does not come with a recovery partition then you need to order the recovery oem from the manufacturer. In this case calling acer. They will send you a disc by mail that is usually around $40 that would restore the computer back to factory. Keep in mind these options delete everything on your computer unless you have a back up it will be gone. There are other options, you could attempt restoring back to a specific point as well before the update. Pressing f8 before the computer posts/boots should give you an option similar to the one you have Now. But you should see an option that says "repair your computer" if you go here there should be an option to do a system restore to a specific point. If not then you need to follow the first set of instructions.