This could help.
http://scpcbgame.com/forum/viewtopic.php?f=6&t=1518
You could try running the game in various compatibility modes but many bugs and MAVS are computer specific. Try re-downloading the game to make sure nothing was corrupted.
Re: need help
#1
I WANT TO [REDACTED] INSIDE TWILIGHT SPARKLE
DRIVER_IRQL_NOT_LESS_OR_EQUAL
Atheros drivers SUCK!
DRIVER_IRQL_NOT_LESS_OR_EQUAL
Atheros drivers SUCK!