- For Windows 7:  - Go to your Start Menu in the bottom left hand corner - On the bottom left there should be start search area.  - Type in DxDiag then press Enter. - The DxDiag window should open. You may be prompted to allow DxdDag to check online for digital signatures, for which please click ‘Yes’ - On the bottom portion of the DxDiag window there should be a button that says ‘Save All Information’ - Click this and save the file as a txt document. - For Windows 8/Windows 10 - Go to your Sta