I can understand your concern. Although the upgrade installed a driver I can't find it on the ATI/AMD website. Also I get an error message on startup about atibtmon.exe which is connected with the graphics card.You need to uninstall your previous AMD Control centre (Remove everything) and restart your computer, and then install the windows 7/8 AMD legacy driver (AMD Catalyst 13.4 Legacy Driver) under compatibility mode windows 8 with administrative rights (Right click on setup and select compatibility mode Windows 8, place tick in Administrative rights), this will then give you partial Catalyst control centre. You then need to go to Device manager and manually force install the legacy display driver which did not install using setup.
Ati Radeon Hd 4200 Compatibility Windows 10
Double click on Ati display driver choose driver tab, select update driver, select 'browse my computer' for driver, then select 'Let me pick from list' click on have disk, and browse to your driver directory and select the driver inf file, this will then install the legacy driver correctly, and give you full functionality of the Legacy driver. This driver works fine with no issues detected so far, even the app market works fine.Hope this helps, all the best.Phill.
Sorry to be the bearer of bad news, but AMD stopped producing drivers for the HD 4x-series last year. It can run under the older OSs because they had Legacy drivers for it, but there are no Win10 drivers for that card.AMD used to have Legacy drivers that you could install. I just tried my old link (I had such a card in Win8x), but it just spins and spins. If you want to try it, it's here:Good LuckI am a volunteer and I do not work for, nor do I represent, HP.-Please click 'Accept As Solution' on the post that solves your issue to help others find the solution.Please click the Thumbs-Up symbol on the left of the Reply button to say thanks fopr my help.