Here are the specs for your HP Pavilion g7-2367er Notebook Computer. According to the specs, this model shipped with the FreeDOS operating system installed at the factory. HP appears to provide Windows 8 drivers only, for this model. Most of the Windows 7 driver from the HP Pavilion g6-2129nr Notebook PC Drivers & Downloads page should work on your HP g6-2229tu computer.
This model has HP switchable graphics and has two graphics sub-systems in it... one Intel... one AMD. Completely remove all previously install graphics drivers. Only install the "AMD High-Definition (HD) Graphics Driver". This driver has both the Intel and AMD drivers, as well the graphics control panel.
Please post the Windows Device Manager's "Hardware Ids" for any missing or unknown devices, as shown in the example below;
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