Dell Vostro A860 resolution problem might occur when you have Windows 7 on your laptop and when you are in the middle of playing games or watching videos. The culprit to this problem might be a missing driver you haven’t installed or uninstalled by accident. Some users reported to have unknown error in reading VRAM, showing 358 in dxdiag.

If you have similar problem, don’t worry as Dell have provided Intel 945gm drivers for Win 7 to be used on Dell Vostro A860 laptops. You can download the driver from Dell’s official driver page, or by visiting here. Once you’ve downloaded the driver, install it and restart your machine. This should fix your resolution problem on Dell Vostro A860.
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