Garrys Mod not starting up.

I wanted to play some Garry’s mod the other day, when I started it up, it froze at the blue screen and my whole computer went unresponsive, I restarted my computer, uninstalled Garry’s Mod, reinstalled it and it is still doing the same thing. I uninstalled and reinstalled a second time, deleted anything to do with garrys mod on my computer and it still freezes on the blue loading screen. I then have to restart my computer. Has anyone else had this problem, or have a solution to fix this problem? Keep any edgy comments to yourself because I only want help.

When it froze, did you wait before restarting your computer each time?
You might need to wait a few minutes (10-20 minutes), just in case it’s taking a while to startup.

The number of addons, workshop and legacy, affects startup and load time.