If the system can not boot, you can restore it from the WinPE environment. The system starts from the hidden partition on the hard drive. To begin the restoration, press Alt + F10 (PC Tower) or F10 (laptop) to boot the PC and when the ACER logo appears. This will start the system from the hidden partition the hard drive and you access its main page. The restoration will be on partition C:. The partition D: (ACERDATA) will not be formatted, and therefore documents will not be deleted but it is always prudent to think about making a backup of your most important documents in case!
Note: You will be asked to enter the password before the System Restore starts. If you enter the wrong password three times, the computer will restart into the operating system.