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VirtualAcorn Technical support:
DirectX Diagnostics

This article contains information on testing DirectX if VirtualRPC has problems running with a particular graphics adapter. Only follow the suggestions on this page if you have been referred here by VirtualAcorn technical support.

Before doing anything make sure that you have confirmed that the correct drivers for your graphics adapter are installed:

Having checked the graphics adapter drivers the next part of Windows to test is DirectX.

For Windows Vista and later click on the Windows Start menu click in the Search Programs and files box at the bottom and type DXDiag (which is short for DirectX Diagnostics) and press Return.

Windows 7 Start Menu

For Windows 2000 or Windows XP click on the Start button then click on Run... from the start menu and type DXDiag (which is short for DirectX Diagnostics) and press Return.

DXDiag will now launch.

A green bar will be shown at the bottom of the window whilst DXDiag completes its tests.

If you see an error message before the tests complete then something is badly wrong with your PCs graphics systems this could be a software or hardware issue. You will need to resolve this fault before VirtualRPC will run. Skip the next section and read the Fixing DirectX faults section of this article.

If DxDiag did run without an error message you need to click through each tab, Display, Sound 1, Sound 2, Sound 3 and Input (the tabs might be slightly different on some PCs) in turn and make sure that the message No problems found is at the bottom left of each tab:

If no problems are found then DirectX is working and is not the source of the problem that prevents VirtualRPC working. If DirectX does report a problem then it will need to be fixed.

Fixing DirectX faults

If your PC is less than a month old you should contact the vender and report the problem at once and tell them to fix the fault or replace the PC. If the PC is less than a year old the company that made the PC should be able to help fix the fault, if the PC is over a year old you will probably have to fix the fault yourself or find a local company that can repair the machine.

If you decide to try and fix the fault yourself the first step is download the correct version of DirectX for your PC. This article from Microsoft has links to all the versions of DirectX for Windows XP or later. Each version of Windows has it's own version of DirectX so make sure you choose the right one. A re-install of DirectX may take several minutes as there are a lot of components. Once DirectX has been re-installed shutdown and restart your PC

If re-installing DirectX does not resolve the fault and you have double checked that the correct drives are installed your PC may have a hardware fault. Tracking down hardware problems is beyond the scope of the technical support that we can offer and you will need to find a local repair shop who can fault test the PC and fix the problem. Make sure you take a backup of all your important files before having the machine repaired as the hard disc may have to be reformatted.

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Last Edit Date 01/04/21