If you can get into windows
environment, you can try and defeat the
malware by downloading
malwarebytes free
here or you can do a factory restore:
Click "Start" menu.
Click "Programs."
Click "Acer Recovery Management."
Click the "Restore" button on the bottom of the dialog box that opens.
Click "Restore System to Factory Default."
Click "Yes" in the warning dialog box which asks if you wish to continue the recovery process.
Click "Start" to restore the computer to the default factory settings.
If you cannot get into windows, Hold down the ALT button while tapping F10, right when starting the computer, before the A
cer logo. The wizard will guide you
through the rest of the process.