Games won't start after installing a new vga?

By amon47
Dec 6, 2013
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  1. Hi !
    I've just bought a new vga (Radeon HD 7850). I had GT 240 before.
    Everything was fine, I downloaded the drivers, played some games and everything was ok.
    After testing it, I decided to uninstall the Nvidia drivers because it seems to me that I didn't need them anymore. I did it using the programs and features in Control Panel. after restarting the PC, the 2 games I tried didn't start.
    Assassin's creed IV Black Flag: when I tried to start it, nothing happend. and nothing changed in task manager.
    Battlefield 4: It says that I need directx 10, which is weird cause I have the newest directx installed on my PC.

    Also, KMplayer won't work... it doesn't show any video but plays the sound, VLC and jetaudio work just fine

    System Information:
    OS: Windows 7 Ultimate SP1
    Processor: Intel Core i3 CPU
    Motherboard: J&W JW-H55T-PRO
    RAM: 8 GB
    VGA: Radeon HD 7850

    So... what should I do?
    Thanks in advance
  2. amon47

    amon47 TS Rookie Topic Starter

    Tried uninstalling and reinstalling the amd drivers and it got fixed

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