Blue Screen of Death, ntoskrnl.exe Help!

Most Recent Three:

Crash dumps are enabled on your computer.

On Thu 10/16/2014 7:49:23 PM GMT your computer crashed
crash dump file: C:\Users\Zachs\Desktop\Misc\dump files\101614-24086-01.dmp
This was probably caused by the following module: hal.dll (0xFFFFF800038117D0)
Bugcheck code: 0x50 (0xFFFFF8000482C598, 0x0, 0xFFFFF800038117D0, 0x0)
Error: PAGE_FAULT_IN_NONPAGED_AREA
file path: C:\Windows\system32\hal.dll
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: Hardware Abstraction Layer DLL
Bug check description: This indicates that invalid system memory has been referenced.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in a standard Microsoft module. Your system configuration may be incorrect. Possibly this problem is caused by another driver on your system that cannot be identified at this time.



On Fri 10/10/2014 3:49:21 PM GMT your computer crashed
crash dump file: C:\Users\Zachs\Desktop\Misc\dump files\101014-17144-01.dmp
This was probably caused by the following module: hal.dll (0xFFFFF800037FB7D0)
Bugcheck code: 0x50 (0xFFFFF80004816598, 0x0, 0xFFFFF800037FB7D0, 0x0)
Error: PAGE_FAULT_IN_NONPAGED_AREA
file path: C:\Windows\system32\hal.dll
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: Hardware Abstraction Layer DLL
Bug check description: This indicates that invalid system memory has been referenced.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in a standard Microsoft module. Your system configuration may be incorrect. Possibly this problem is caused by another driver on your system that cannot be identified at this time.



On Thu 10/2/2014 9:33:54 PM GMT your computer crashed
crash dump file: C:\Users\Zachs\Desktop\Misc\dump files\100214-22136-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x75BC0)
Bugcheck code: 0xC5 (0xFFFFF88002FA4D20, 0x2, 0x1, 0xFFFFF800033C7EC1)
Error: DRIVER_CORRUPTED_EXPOOL
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that the system attempted to access invalid memory at a process IRQL that was too high.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem. This might be a case of memory corruption. More often memory corruption happens because of software errors in buggy drivers, not because of faulty RAM modules.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.

There were twenty before those, but they were, for some reason, deleted. I checked over them and they all had one thing in common, ntoskrnl.exe. It wasn't always the one that crashed, but it caused the crashes if it wasn't.