Updating windows me to xp
Stop 0x C000021A can when on restart after a system administrator has modified permissions so that the SYSTEM account no longer has adequate permissions to access system files and folders.
MS-MVP Jim Pickering advises the following as one approach to these problems: Restart the computer.
This may be a global symptom emerging from several distinct causes, because, by default, XP executes an automatic restart in the event of a system failure.
Therefore, more or less anything compromising the operating system during the shutdown process could force this reboot.
(NOTE: This problem exists with the SBLive in Windows 2000 also.) You may have to do a couple of extra steps to get rid of old files so that the new drivers will install correctly (especially if you installed the final version of Win XP on top of one of the Beta versions), or to remove troublesome support software. In the \WINDOWS\SYSTEM32 folder, delete the DEVLDR file. Some users report that the DEVLDR problem continues to plague them even with the new drivers.
Correspondent Sean Caldwell summarized his steps: Shutdown Windows. If installing the new drivers doesn’t solve your shutdown problem, try these solutions: In addition to hardware issues mentioned under other specialized topics on this page, many users have written identifying specific hardware as at the root of the Windows XP shutdown issue.
Shutdown problems in Windows XP can be caused by many factors, just like earlier versions of Windows.
These included: a damaged exit sound file; incorrectly configured, damaged, or incompatible hardware; conflicting programs, or an incompatible, damaged, or conflicting device driver.
In the early days of Win ME, one of the biggest culprits for shutdown issue was the Creative Labs Sound Blaster Live.Stop 0x9F and Stop 0x8E are two of the most common of these at shutdown, and generally point to a bad driver.Stop 0x7B on restarting means Win XP lost access to the system partition or boot volume during the startup process, due to a bad device driver, boot sector virus, resource conflict, boot volume corruption, or other problem listed here.Here’s the commonly reported problem scenario people encountered: On attempting shutdown, nothing at all appears to happen for a prolonged period of time.Eventually, an “End Task” window appears, wanting to terminate DEVLDR32. No matter what one does, one ultimately is locked out of shutting down other than by a power switch shutoff.