BSOD Kernel event ID 41 error and print screen freeze

Hello Hello,

I'm having some annoying issue's

I recently clean installed window's 10

Specs

I have MSI z87 mpower max mobo

OS HARD DRIVE IS A
Seagate Barracuda 1TB ST1000DM003
purchased and installed on 16-03-2015
(fresh install was down when windows 10 came out)

not to sure about 2 years old C:

CPU i7 4790K
witch was purchased on and installed on 01-07-2015

PSU
witch was purchased and installed on 01-04-2015
https://www.pccasegear.com/index.php?main_page=product_info&products_id=27993

GPU
EVGA GeForce GTX 780 Ti 3GB
witch was purchased on 24-11-2013 (the oldest part)

RAM

G SKill 16G(2x8G)DDR3 2400Mhz PC3-19200 F3-2400C11D-16GXM
purchase date and installed 2015-03-23

Currently my issue's are if i hit print screen my entire system freezes and i have to hold the power button down to shut off the computer
next one is my computer will randomly shuts off on its on after several hours and randomly but not off completely if i go to my keybored and press a key the computer will act if its just starting up like coming off standby but going into boot

(power options are set to high and never to sleep or turn off screen)

I tried doing a memtest over night it was on about 6 hours of no errors i went to sleep woke up and seen the computer was off but not exactly off completely i just pressed a button and the computer went into boot (but wasent actually shut down ) if that makes sense like the computer was still on (lights on and everything)

I have several errors in the event log