Welcome to justanswer
May I know the acer model number ?
Is it a netbook or tablet ?
Is it a laptop with keyboard and screen or only touch screen ?
Please click the above link and check is it the same model ?
IS there any important data in it as if we will do the factory restore all data will be erased ?
First, restart the Acer . As soon as the Acer logo comes up on the screen, press two keys, Alt and F10, at exactly the same time. This reveals the recovery menu. When the menu appears, press "Enter" to begin the restore wizard, the program that guides owners through the restore process.
Let me know how it goes