need solutions for "Pixel format not accelerated" error [duplicate]
Solution 1:
This is a problem occurring when your graphics card runs outdated drivers. Try to update your GPU drivers and check if this fixes your problem.
If there are no more recent drivers available, then you might need to update your GPU itself.
Have you successfully played on minecraft 1.12 before this error?
More info on the subject and possible ways to fix it can be found here: http://hopper.minecraft.net/help/pixel-format-not-accelerated/