I made the jump today to Windows 10 and like many other legacy (mobility) card users the support isn't there (yet), besides the drivers which are automatically installed by Windows. Therefore, I thought I'd make a quick guide of how I got the legacy drivers installed on my laptop and have the Catalyst Control Center up and running. They are basically the same steps which I had to do with Windows 8/8.1 previously.
Drivers installed with this guide: Legacy
Windows version: Windows 10 Home x64
Laptop: Toshiba L500-1ZP (2010)
I suppose the following steps should also work for graphics card considered legacy now for desktops. However, do note that I applied these steps for my laptop which has a re-branded ATI Mobility Radeon HD 4650 (HD 5650).
Credit goes to this page as its the guide I used to get it to work on Windows 8/8.1 previously.
Here are the steps:
1: Download the legacy driver for your system (legacy drivers link provided above) and run the installer but close it after it unpacked all the installation files to C:\AMD.
2: Open Device Manager.
3: Under Display adapters right click on the adapter used in your system and click Update Driver Software.
4: Click on the second option Browse my computer for driver software.
5: Click Let me pick from a list of device... in the next menu and Have Disk... on the following.
6: Click Browse on the pop-up menu and go to: C:\AMD\AMD_Catalyst_13.4_Legacy_Beta_Vista_Win7_Win8\Packages\Drivers\Display\W86A_INF.
7: Select the first .inf file - In my case this was: C7156445.inf - and click open.
8: Select the model from the list that corresponds to your hardware - there were two of the same in my case so I just clicked the first - and click Next. Afterwards the driver should install accompanied with several screen flickers.
9. Now re-run the legacy driver installer from AMD and have it install the Catalyst Control Center.
10. Restart the computer if you'd like.
This got it to work on my system and allows me to use CCC on Windows 10 with a Legacy (mobility) card.
I attached two screenshots below, one of CCC and another of the Device Manager, to show which drivers are installed now on my system. It is important to note that the Driver Version installed according to the device manager is 8.970.100.0 - in my case - which is different from the version installed automatically by Windows 10 would have the following numbers: 8.970.100.9001. I have no knowledge of if the drivers provided by Windows 10 are better or just the latest legacy beta drivers with a new signature for Windows 10.
I hope this helps some people along using older hardware but wanting to update to Windows 10.
Message was edited by: Nota (August 4th, 2015)