PAGE_FAULT_IN_NONPAGED_AREA

STOP: 0x00000050 (0xf8655000, 0x00000001, 0xfc7cc465, 0x00000000)
PAGE_FAULT_IN_NONPAGED_AREA (50)
http://answers.microsoft.com/en-us/windows/forum/windows_7-system/windows-7-64-blue-screen-stop-error-0x00000050
The PAGE_FAULT_IN_NONPAGED_AREA bug check has a value of 0x00000050. This indicates that invalid system memory has been referenced.
Important Info If You Have Received a STOP Code
If you received a blue screen error, or stop code, the computer has shut down abruptly to protect itself from data loss. A hardware device, its driver, or related software might have caused this error. If your copy of Windows came with your computer, call the manufacturer of your computer. If you purchased
Windows separately from your computer, Microsoft provides support. To find contact info for Microsoft or your computer manufacturer, Contact Support.
If you have experience with computers and want to try to recover from this error, follow the steps provided in the Microsoft article Resolving STOP (Blue Screen) Errors in Windows.
These actions might prevent an error like this from happening again:

1. Download and install updates and device drivers for your computer from Windows Update.
2. Scan your computer for computer viruses.
3. Check your hard disk for errors.

PAGE_FAULT_IN_NONPAGED_AREA Parameters The following parameters are displayed on the blue screen.

Parameter	Description
1	Memory address referenced
2	0: Read operation 1: Write operation
3	Address that referenced memory (if known)
4	Reserved

If the driver responsible for the error can be identified, its name is printed on the blue screen and stored in memory at the location (PUNICODE_STRING) KiBugCheckDriver.
Cause
Bug check 0x50 usually occurs after the installation of faulty hardware or in the event of failure of installed hardware (usually related to defective RAM, be it main memory, L2 RAM cache, or video RAM). Another common cause is the installation of a faulty system service.
Antivirus software can also trigger this error, as can a corrupted NTFS volume.
Resolution Resolving a faulty hardware problem: If hardware has been added to the system recently, remove it to see if the error recurs. If existing hardware has failed, remove or replace the faulty component. You should run hardware diagnostics supplied by the system manufacturer. For details on these procedures, see the owner's manual for your computer.
Resolving a faulty system service problem: Disable the service and confirm that this resolves the error. If so, contact the manufacturer of the system service about a possible update. If the error occurs during system startup, restart your computer, and press F8 at the character-mode menu that displays the operating system choices. At the resulting Windows Advanced Options menu, choose the Last Known Good Configuration option. This option is most effective when only one driver or service is added at a time.
Resolving an antivirus software problem: Disable the program and confirm that this resolves the error. If it does, contact the manufacturer of the program about a possible update.
Resolving a corrupted NTFS volume problem: Run Chkdsk /f /r to detect and repair disk errors. You must restart the system before the disk scan begins on a system partition. If the hard disk is SCSI, check for problems between the SCSI controller and the disk.
Finally, check the System Log in Event Viewer for additional error messages that might help pinpoint the device or driver that is causing the error. Disabling memory caching of the BIOS might also resolve it.
Remarks Typically, this address is in freed memory or is simply invalid.
This cannot be protected by a try - except handler -- it can only be protected by a probe.

BCCode: 50      0x00000050  <-- link="" read="" strong="" this="">
http://www.faultwire.com/solutions-fatal_error/PAGE-FAULT-IN-NONPAGED-AREA-0x00000050-*1095.html?order=votes
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Look in the Event Viewer to see if anything is reported about those.
http://www.computerperformance.co.uk/vista/vista_event_viewer.htm
MyEventViewer - Free - a simple alternative to the standard event viewer of Windows.
TIP - Options - Advanced Filter allows you to see a time frame instead of the whole file.
http://www.nirsoft.net/utils/my_event_viewer.html
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Here are some methods to possibly fix the blue screen issue. If you could give the Blue Screen
info that would help. Such as the BCC and the other 4 entries on the lower left. And any other
error information such as STOP codes and info such as IRQL_NOT_LESS_OR_EQUAL or PAGE_FAULT_IN_NONPAGED_AREA and similar messages.
As examples :
BCCode: 116
BCP1: 87BC9510
BCP2: 8C013D80
BCP3: 00000000
BCP4: 00000002
or in this format :
Stop: 0x00000000 (oxoooooooo oxoooooooo oxooooooooo oxoooooooo)
tcpip.sys - Address 0x00000000 base at 0x000000000 DateStamp 0x000000000
This is an excellent tool for posting Blue Screen Error Information
BlueScreenView scans all your minidump files created during 'blue screen of death'
crashes, and displays the information about all crashes in one table - Free
http://www.nirsoft.net/utils/blue_screen_view.html
Many BlueScreens are caused by old or corrupted drivers, especially video drivers however
there are other causes.
You can do these in Safe Mode if needed or from Command Prompt from Vista DVD or
Recovery Options if your system has that installed by the maker.
How to Boot to the System Recovery Options in Windows 7
http://www.sevenforums.com/tutorials/668-system-recovery-options.html
You can try a System Restore back to a point before the problem started if there is one.
How to Do a System Restore in Windows 7
http://www.sevenforums.com/tutorials/700-system-restore.html
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Start - type this in Search Box - COMMAND   find at top and RIGHT CLICK  -  RUN AS ADMIN
Enter this at the prompt - sfc /scannow
How to Repair Windows 7 System Files with System File Checker
http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html
How to analyze the log file entries that the Microsoft Windows Resource Checker (SFC.exe)
program generates in Windows Vista cbs.log (and Windows 7)
http://support.microsoft.com/kb/928228
The log might give you the answer if there was a corrupted driver. (Does not tell all the possible
driver issues).
Also run CheckDisk so we can rule out corruption as much as possible.
How to Run Check Disk at Startup in Windows 7
http://www.sevenforums.com/tutorials/433-disk-check.html
------------------------------------
Often updating drivers will help, usually Video, Sound, Network Card  (NIC), WiFi, 3rd party
keyboard and mouse, as well as other major device drivers.
Manually look at manufacturer's sites for drivers - and Device Maker's sites.
http://pcsupport.about.com/od/driverssupport/ht/driverdlmfgr.htm
Installing and updating drivers in Windows 7 (updating drivers manually using the methods above
is preferred to ensure the latest drivers from System maker and Device makers are found)
http://www.sevenforums.com/tutorials/43216-installing-updating-drivers-7-a.html

Stop Windows 7 from Automatically Installing Device Drivers
http://helpdeskgeek.com/windows-7/stop-windows-7-from-automatically-installing-device-drivers/
How To Disable Automatic Driver Installation In Windows 7 / Vista
http://www.addictivetips.com/windows-tips/how-to-disable-automatic-driver-installation-in-windows-vista/

Disable Windows Update Device Driver Search Prompt In Windows 7 / Vista (for Professional,
Ultimate, and Enterprise)
http://www.addictivetips.com/windows-tips/disable-windows-update-device-driver-search-prompt/
----------------------------------------------
How to fix BlueScreen (STOP) errors that cause Windows Vista to shut down or restart
unexpectedly
http://support.microsoft.com/kb/958233
Troubleshooting Vista Blue Screen, STOP Errors (and Windows 7)
http://www.chicagotech.net/vista/vistabluescreen.htm
Understanding and Decoding BSOD (blue screen of death) Messages
http://www.taranfx.com/blog/?p=692
Windows - Troubleshooting Blue Screen Errors
http://kb.wisc.edu/page.php?id=7033
----------------------------------------------
In some cases this might be required.
StartUp Repair from Recovery Options or Windows 7 disk
How to Run a Startup Repair in Windows 7
http://www.sevenforums.com/tutorials/681-startup-repair.html
How to Boot to the System Recovery Options in Windows 7
http://www.sevenforums.com/tutorials/668-system-recovery-options.html
How to Create a Windows 7 System Repair Disc
http://www.sevenforums.com/tutorials/2083-system-repair-disc-create.html
How to Do a Repair Install to Fix Windows 7
http://www.sevenforums.com/tutorials/3413-repair-install.html
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http://support.microsoft.com/kb/2719594/en-us
Srvnet.sys6.1.7601.22014
srvnet.sys download
Press Start and select Run.
Type CMD and press Enter.
Type regsvr32 "filepath\filename.dll" and press Enter.
 (ex. regsvr32.exe "C:\Windows\system32\filename.dll")
==============================

Equipo - propiedades - Advance System setting - advanced - ( Perfomance ) - Settings -
 Advanced (Virtual Memory ) - change..
Destildar la opcion 'Automatically manage paging file size for all drives'
y marcar la que dice 'No paging file' y hacer click sobre el boton 'set'
luego reiniciamos el equipo, y por ultimo volvemos a poner la opción 'Automatically manage paging file size for all drives' y volvemos a reiniciar
http://support.microsoft.com/kb/903251/es
el equipo está infectado con una variante del virus HaxDoor.
El virus HaxDoor crea un proceso oculto. También oculta archivos y claves del Registro. El nombre del archivo ejecutable del virus HaxDoor puede variar, pero suele ser Mszx23.exe. Muchas variantes de este virus introducen en el equipo un controlador denominado Vdmt16.sys o Vdnt32.sys. Este controlador se utiliza para ocultar el proceso del virus. Las variantes del virus HaxDoor pueden restaurar estos archivos si los elimina.
http://support.microsoft.com/kb/329293/es 

STOP: 0x00000019

http://www.techspot.com/community/topics/volume-shadow-copy-causing-stop-0x00000019-bad_pool_header.94820/page-5
 post Nr 70

It turned out that my problem arose not directly from changing my hard drives...but from using a cloning program (Acronis True Image) to do it. While I don't know the technical issues involved, suffice it to say that this was the problem. And for those who may have the same problem, here is the solution as noted in the referenced post:
1. Go to windows Device Manager
2. Click "view" and select "show hidden devices"
3. Scroll down to "storage volumes"
4. Click on the plus to expand.
5. Click on each one listed and right click and uninstall. (you will get a message on some saying to reboot before it takes effect. Select no until you do them all.)
6. Reboot.
7. Wait till windows automatically reinstalls devices. Will prompt to reboot again.
8 Reboot.
Now it should work.