- Acer Aspire 722 - Dual boot with Ubuntu 12.04 inside windows 7.
As I have updated my Ubuntu 12.04 and installed the restricted hardware (graphics) drivers, the system boots and freezes to a blank screen.
A hard reset is the only option to reboot.
Can you get to the console by pressing Ctrl+Alt+F1? If so login to the console and uninstall the drivers by typing:
This will remove the AMD/ATI graphics driver and revert back to the open source one. The reboot the computer by typing
If you cannot get to the console, choose recovery mode at the boot loader (GRUB) menu. using this guide. Then choose "Drop to root shell prompt." There you can use the above commands without
Hope this helps