There are times your system information may be needed. GZDoom uses OpenGL 3D acceleration, which is prone to hardware or driver issues. If your driver is suspect, we will need to identify the exact make and model of your computer and/or the exact make and model of the driver and video card powering your system.
Additionally, information about your GZDoom version is needed, as well.
Spoiler: How to export DXDiag and MSInfo
Export a DXDiag report:
Go to Start > Run and type 'dxdiag' (without quotes please) in the 'Open' field and press OK button Important: If you do not have the "Run" command in your start menu, please press Windows+R to open the run prompt. Then type 'dxdiag' (without quotes) in the 'Open' field and press the OK button.
Wait for 'green' progress bar to finish loading and then press the 'Save All Information...'’ button
Name the file with some useful info, like your name and the date, and save it where you can find it, like the Desktop, by pressing the 'Save' button
Press the 'Exit' button to quit this application
Export a MSInfo report:
Go to Start > Run and type 'msinfo32' (without quotes please) in the 'Open' field and press OK button Important: If you do not have the "Run" command in your start menu, please press Windows+R to open the run prompt. Then type 'msinfo32' (without quotes) in the 'Open' field and press the OK button.
When the 'System Information' window is open, click on 'File' in the top toolbar and select the 'Export...' option
Name the file with some useful info, like your name and the date, and save it where you can find it, like the Desktop, by pressing the 'Save' button
The export process can take a few moments, so please wait for the progress bar to finish, and then you can close this application
Source: Shamelessly stolen from here Uploading requested files to the forum:
While replying to your topic, make sure "Full Editor" is open
Click "Upload attachment" near the bottom of the editor
Click "Browse"
Go to your desktop, and open one of the requested files in the browse window
Click "Add the file"
Click "Browse" again
Find the other file on your desktop, and then select that one
Click "Add the file"
Type something into your post so it is not empty
Click "Submit"
Spoiler: Where to get the GZDoom version number
Additionally, all information about what wads you are using, where they can be obtained, or a sample copy, is required for all custom content - even if it is autoloaded, and even if it has worked fine before.
If you can pin down the issue that is causing the problem, then submitting a copy of a stripped-down wad that reproduces the problem in question by itself, without requiring anyone to download hundreds of megs of stuff, would be helpful.