GZDoom problem

[Haloless0320]

Ok I ran into a problem.I updated my Nvidia driver just to find out it screwed alot of stuff up.So I downgraded back to the original driver and Tried running GZdoom with opengl.And it CTD,I tried reinstalling it and everything.I wouldnt be so aggrivated with this if it didnt throw me back on my wip.Can anyone tell me how I can fix this problem?

[Planky]

There are driver cleaner programs that will remove every trace of the graphics drivers, effectively allowing you to do a clean install of the older drivers. Not sure what one I used in the past, but it worked.