Ati catalyst not updating drivers
Important: For most hardware, a driver update is not required just because you've updated to Windows 8.1 or Windows 8.1 Update.I still recommend installing the most recent Windows 8 driver for your hardware but don't worry if it doesn't specifically say it's a Any Windows 8 drivers for Acer products can be found via their support site (linked below) just like their drivers for other operating systems.
This Windows 8 driver is compatible with most AMD/ATI Radeon HD GPUs, including those in the R9 series, as well as the HD 7000, HD 6000, and HD 5000 series. Important: There are both 32-bit and 64-bit versions of this Windows 8 driver available.
Be sure that you install the correct one for your version of Windows 8.
More » Canon does provide some Windows 8 drivers for their printers, scanners, and multi-function devices, all of which you can download from their support site that I've linked to here.
Tip: While Canon does not seem to keep a list of their devices that work with Windows 8 out-of-the-box, I do own a number of Canon products and, looking at information on Microsoft's site and in Windows 8 itself, it appears as though most of their popular printer and scanner models will work perfectly fine in Windows 8 with the drivers Windows provides. Creative has made available Windows 8 drivers for some of their popular Sound Blaster audio products but many of them are currently beta drivers.
If you're clean installing Windows 8, which I always recommend, your only concern should be the BIOS category.
In other words, be sure to update your listed Acer computer's BIOS to the latest version before installing Windows 8.
Important: The Windows 8 drivers linked to here are directly from C-Media.
A C-Media chip may be a part of your sound card or motherboard but it's possible there's a Windows 8 driver that's a better fit for your sound device from your sound card or motherboard manufacturer.
I'd guess that this page will stay updated for quite a while as Windows 8 becomes more commonplace.
More » While I couldn't find a list of BIOSTAR motherboards and video cards that were compatible with Windows 8, I did find that most of their recent hardware has Windows 8 drivers available.
Acer's Upgrade Assistant tool can be used to see if your computer is a compatible model.