Debugging :: BSOD / Crashes And Freezes While Gaming On Asus Notebook A56CB

Bought a new laptop almost a year ago, i was never able to find the cause of the crashes.

Here some specs

- Intel i7-3537U CPU
- Asus K56CB motherboard
- NVIDIA GeForce GT 740m Dedicated GPU
- Intel HD Graphics 4000 Integrated GPU
- 4gb 1600 Ram, single stick
- Windows 8.1 (had the same problem with win 8)

On every game i play i get random freezes, random crashes, random BSODs, some games do crash more frequently than others, I've tried older drivers, I've also formatted my pc but the problem is still there...I am not using any antivirus, windows defender is enough for me.

What gets on my nerves the most is that even on old games like quake live do crash and sometime it also gives me BSODs, the fps are constant and quite high but i randomly get freezes (about 0,5 - 1 second long)...

another example, im playing SMITE, i get 80-150 fps but the game crashes every 2-5 mins, this game rarely gives me BSODs, when im lucky the game wont crash for 20-30min, but its very rare. the gpu can reach 80-85C. With "crash" i mean black screen with a window saying "Game.exe has stopped working"

There are other odds things happening on this notebook, for example i cant access to the bios while booting, i can only access to it once i log to my windows account, another strange thing is when i left click any file sometime it takes 10-15 seconds to get the "open, open with, copy, paste, cut etc.. window opened". I've also noticed that sometime while gaming my disk usage get to 100% for an instant and when that happens i get a lag spike/freeze...

If no way to find the source of my problems ill build a desktop and than ill keep sending the notebook to warranty until they fix it . I've still got 1 year of warranty, I've also sent it once already but they only changed the hard disk, and it didn't solve the problem too ...