Why does roblox crash my laptop?

My roblox was working just fine, but from not too long ago, I can't play it because after just getting to the login screen, after some seconds, it gives my laptop a bluescreen or it just resets automatically and I can't do anything about it.

I tried deleating my temporar files, I tried opening the app as an administrator, I tried cleaning my cache, I tried restarting my laptop, I tried reinstalling roblox and nothing even worked but just added more seconds until everything crashed. Another thing I want to say is that just roblox crashes and not other app. I have an windows 8.1 .

:)