Hp Envy-m6 1255eo getting bluescreen and stuff..

Hey!

I have a HP envy-m6 1255eo that i updated from win8 to win8.1 for a couple of weeks ago. Recently I've had a lot of problems.

1. I get bluescreens

- "SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (Wdf01000.sys)"

-"KERNEL_DATA_INPAGE_ERROR"

2. The computer sometimes turn itself off when i put it into sleepmode

3. I have som small problems with my networkcard. It keeps disconnecting from my network.

4. I've also had some problems with programs that just stop working, like Google Chrome and spotify.

I hope someone can help! Thank you :)