Constant BSOD's and Crashing (Lenovo Y510P)

[ChinchillaFace]

Anyone have any idea what's going on? Programs keep crashing, windows updates fail, programs don't install correctly, and web pages crash every few minutes (chrome and internet explorer).

Some blue screens that I have been getting:
-IRQL_NOT_LESS_OR_EQUAL
-MEMORY_MANAGEMENT
-PFN_LIST_CORRUPT
among others that I don't remember off the top of my head

Computer is a Lenovo Y510P with a 240gb Crucial M500 hard drive running Windows 7 Home Premium 64bit, otherwise stock (stock 8gb ram, stock 750m sli, etc). Help! I kinda suck with computers!

Side note: The computer has been running disk checks quite often, and I'm not sure if that has anything to do with the problem: just thought I would mention that too

 

[ChinchillaFace]

Found the problem, for those curious. I ran memtest, with various configurations of RAM in different slots, and found that one of my RAM sticks was bad. Once the stick was removed, the problem was fixed; now I just need to buy some more RAM to replace it.