|When you've got a factory-built PC, or a laptop, you must only install system drivers which you've downloaded from that manufacturer's website. Never download them from the device manufacturer because they will not be the correct ones.|
And don't let Microsoft search for them either, go directly to your laptop manufacturer's localised website and download them yourself for that laptop model. If the previous driver was working okay, there was no need to update it anyway. Updating drivers is not compulsory, but you've added to the problem by downloading it from the wrong website.
What you should do now:
Go into Device Manager.
Double-click the ATI Radeon device under "Display Adapters".
Click the Driver tab.
Click "Roll Back Driver".
In future, download drivers from Acer only. But do not update any of them unless it's necessary (eg to fix a specific problem).