I've seen them. Most of them are 1A, some are 3B, some are 1000007E and one is 50.
None of give a probable cause. So enable verifier and post the dumps you get with them.
Code:
STOP 0x0000001A: MEMORY_MANAGEMENT
Usual causes: Device driver, memory, kernel
-----------------------------------------------------
STOP 0x0000003B: SYSTEM_SERVICE_EXCEPTION
Usual causes: System service, Device driver, graphics driver,
memory
----------------------------------------------------
STOP 0x00000050: PAGE_FAULT_IN_NONPAGED_AREA
Usual causes: Defective hardware (particularly memory - but not just RAM),
Faulty system service, Antivirus, Device driver, NTFS corruption, BIOS.
----------------------------------------------------
STOP 0x1000007E: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M
Usual causes: NA
May I know if your laptop is under its warranty?