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#11
I have had a similar problem, but in Windows 7 - old laptop without supported graphic driver. In my opinion it is best to install whole package, if you can. Otherwise manually.
When you picked inf file - what did installer show? Before you confirmed installation the name is presented to you.
These are another instructions from MS forums:
1. Install the driver
2. Go to Device Manager -> Graphics Card (or Video Card, or something similar)
3. Right click, select Update Driver
4. Choose the second option, something like "Search driver on the computer"
5. Choose "Select driver from list"
6. Click button "Device..." (right corner)
7. Now you have to choose a file. Navigate to the folder "C:\AMD\Support\13-1-legacy_vista_win7_win8_64_dd_ccc\Packages\Drivers\Display\W86A_INF".
Maybe the folder has a slightly different name in your case!
8. There should be a few files in this folder, choose one of them and click Okay
9. Back in the list there should now be one or a few entries with a name similar to your card (Radeon HD 4200)
10. Click Next - the driver should install
11. Restart your computer
Hope I could clarify things a little bit!