This is a detailed explanation of the situation regarding , including why there are no "new" official drivers, what your actual options are, and the full technical story.
13.9 (Catalyst 13.9)
However, you can still get it working by using the last stable drivers released for Windows 8 or 7 and installing them in compatibility mode. 1. Download the Legacy Driver ati radeon hd 4890 drivers windows 10 64bit new
The HD 4890 is a power-hungry card for its age. It requires two 6-pin PCI-E power connectors. This is a detailed explanation of the situation
Upgrade to a newer GPU (even a used Radeon RX 400 series or GTX 900 series) for proper Windows 10 driver support. If you must use the HD 4890, stick to Windows 8.1 or Linux (where open-source radeon drivers still support it perfectly). Download the Legacy Driver The HD 4890 is
The installation process often requires a manual touch. If the executable installer fails or finishes too quickly without changing the resolution, you should use the Device Manager to force the update. By selecting "Update Driver," then "Browse my computer," and pointing the wizard to the folder where the AMD installer extracted its files (usually C:\AMD), you can manually select the HD 4800 Series driver.
There are specifically designed for the ATI Radeon HD 4890 for Windows 10 64-bit. The Radeon HD 4000 series is considered "Legacy" hardware and has reached End of Life (EOL) status.