Question Laptop kept on shutting down on its own

[Kim_24]

Hi! I have an Alienware m15x with a gtx 260m and is operating on a windows 7 operating system. I have been using it for almost 3 years now but recently, my laptop kept on logging off then shuts down after quite a few seconds or minutes, somrtimes it performs the same process even while on the "accounts" screen (guest,profile1,etc.)

 

[Kim_24]

-additional information-

its says "unknown software exception (0xc06d007e) occured on the location 0x7799b727" in a prompt message