Far Cry 4. I have an "undefined" and I'm not afraid to use it!

This is how my day has gone so far:
1. In car, see advert about hackathon
2. Look it up, see tickets go on sale in 30mins
3. Read more about hackathon, apparently tickets go within minutes
4. Get tickets, print
5. Printer out of ink
6. Accidentally deleted ticket, can't reprint
7. No more tickets left so can't get another
8. Spend hours with data recovery tools
9. Remember recycle bin. Reprint ticket
10. Cry
11. Rant on devRant

Anytime I run a game on my laptop, the game crashes. COD is working fine, Far cry 4 and watch dogs 2 are running without audio and games like forza horizon and others are not even running. I have gtx 940 4gb on top of i5 6gen.
can anybody help?