Nobody's forcing you to upgrade your OS. If you choose to, then meet Microsofts requirements. If you aren't looking for all the bells and whistles Windows 10 brings to the table, then install it. It will give you a set of basic drivers to do your normal stuff fairly well. But then your right back where you started. Your choice.
Products That Do Not Support Windows® 10
AMD Radeon™ HD 4000 Series products and older are not certified to support Windows Display Driver Model (WDDM) 1.2 or higher and therefore, do not have driver support for Windows® 10.
The following is a list of graphics products that do not support Windows® 10:
ATI Radeon™ HD 4000 Series /ATI Mobility Radeon™ HD 4000 Series Graphics
ATI Radeon™ HD 3000 Series /ATI Mobility Radeon™ HD 3000 Series Graphics
ATI Radeon™ HD 2000 Series /ATI Mobility Radeon™ HD 2000 Series Graphics
ATI Radeon™ X1### Series/ATI Mobility Radeon™ X1### Series Graphics
ATI Radeon™ X### Series/ATI Mobility Radeon™ X### Series Graphics
ATI Radeon™ 9000 Series Graphics
ATI Radeon™ 8500 Graphics
ATI Radeon™ 7500 Graphics
ATI Radeon™ DDR Graphics
ATI Radeon™ 7000 Graphics
ATI Radeon™ 7000VE Graphics
ATI Radeon™ 7000LE Graphics
Windows® 10 will install the default Microsoft® Basic Display Driver (MBDD) for these graphics adapters. MBDD provides basic display functionality (low resolutions and color) on a single monitor but DOES NOT support:
Display scaling control
Brightness control on integrated display panels
AMD Catalyst™ Control Center
If your system is equipped with an AMD Radeon™ HD 4000 Series product or older, you may consider the following options:
Continue using the existing operating system.
If you have already upgraded to Windows® 10 and would like to revert back to the previous version of Windows, refer to this Microsoft page for instructions.
Upgrade to an AMD graphics product that provides Windows® 10 support. For information about resellers and product availability, visit: http://shop.amd.com
NOTE: Before upgrading ensure that your system meets the requirements of the graphics adapter, such as:
Motherboard with compatible graphics card slot
Adequate power supply unit to handle the complete system power requirements
Display with compatible connections
I have a hd 3850 and win 10 recognized the card. Installed a driver. And displayed the amd 3850 in the device manager.
My problem is no catalyst support. I stream my pc to the tv... the catalyst drivers allow that to happen.
So I rolled back to 8.1.
And I guess a video card replacement is in order.
But with the os being so new...
Any card is a gamble at this point.
I have an hd 3850 but win 10 was not able to load any driver for it, only the the default Microsoft® Basic Display Driver
i've managed to solve this issue, i found an error with the PCI express root port (Error code 12) in the device manager, and after some googleing, i found a solution: http://answers.microsoft.com/en-us/insider/forum/insider_wintp-insider_devices/pci-express-root-port-error-code-12/8144bd84-9070-4208-9578-7b16a85c8fc3?auth=1
Open the start menu and type cmd in the search box
Right-click on cmd.exe and select Run as administrator
In the command window, type bcdedit /set pciexpress forcedisable
Reboot your computer
I dont know wether this is motherboard dependent or not, but after the reboot, everything worked like a charm, win10 installed the built-in driver for the card.
PS: i dont care about catalyst so i havent even tried it.