"Stop 0x50" Error Message While Installing Windows

Symptoms

While you are installing the Windows operating system, your computer may stop responding (hang) while displaying the following error message on a blue screen:

STOP: 0x00000050
PAGE_FAULT_IN_NONPAGED_AREA

Cause

This error message may be caused by faulty memory (RAM) in your computer.

Resolution

To resolve this issue, replace the faulty RAM.

More Information

The faulty RAM could be located in any of several areas, including the secondary RAM cache, the video RAM, or the computer's main memory. To determine where the faulty RAM is located, use the following steps:
  1. Disable all caching on your computer, including the CPU cache and L2 cache, in the computer's CMOS settings. For information about how to use your computer's CMOS configuration tool, please refer to your computer's documentation.


    If you can successfully install Windows after disabling all caching, try re-enabling each cache, one at a time, to determine the area in which the faulty RAM is located. If you still receive the error message, continue to the next step.
  2. Temporarily replace your video adapter. If you can install Windows after replacing the video adapter, the video adapter you replaced is faulty.
  3. Temporarily replace the main memory installed in your computer. If the RAM in your computer consists of multiple SIMM modules, you may be able to swap SIMM modules to determine which has the faulty memory.


    For example, if you have four modules of 8 megabytes (MB) each, remove two of the modules and try installing Windows again. If the Setup process still does not succeed, swap one of the SIMMs in the computer with one that you removed and try again. Continue this process to determine which of the SIMM modules contains the faulty memory.
For additional information about the error message listed above, see the following articles in the Microsoft Knowledge Base:
183169 Possible Resolutions to STOP 0x0A, 0x01E, and 0x50 Errors


155573 "Stop 0x50" Transferring Files over RAS with Windows NT 4.0


156211 Network Virus Checking Programs and Microsoft Windows NT


162837 Replacing TCP/IP After SP2 Causes STOP 0x00000050


156410 STOP 0x1E or 0x50 Error on Multiprocessor DEC Alpha Computer


164352 Stop 0x00000050 in Tcpip.sys Caused by Winsock Applications


167362 STOP 0x00000050 in Srv.sys When Shutting Down Computer


163620 STOP 0x50 in Rdr.sys If Pathname Too Long in SMB


162438 "STOP 0x50" Accessing Files on Windows NT from Windows 95


160370 Stop Screen 0x00000050 Caused by Fs_rec.sys


166445 Stop 0x00000050 with S3 Video


167652 New Installation of Windows NT 4.0 Results in STOP 0x00000050


166828 Upgrade Installation of Windows NT 4.0 Results In STOP Errors
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