BSOD, seems random, usually 0x0000001e

Hi, I have a laptop (Dell E6530, Win7 Prox64) that has been getting a BSOD every few days, sometimes twice a day. Usually it is this: The bugcheck was: 0x0000001e (0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000). A dump was saved in: C:\Windows\MEMORY.DMP. Report Id: 022013-9516-01. Most recently it was: The bugcheck was: 0x0000003b...