I had the same problem but before ubuntu loaded, i hit esc and chose the acpi workarounds and it worked :) hope this helps you...
-- [Wubi 10.04] The installer encountered an unrecoverable error and will now reboot https://bugs.launchpad.net/bugs/575568 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs