今天电脑出现蓝屏显示：STOP：C0000218 unknown hard error  用最后一次正确模式启动又没用..用安全模式也没有用..在网上了相关资料与解决方法，请查看下文，希望对碰到这问题的朋友有帮助。
案例1：  电脑出现蓝屏显示：STOP：C0000218 unknown hard error  用最后一次正确模式启动又没用..用安全模式也没有用..电脑也没装一键还原..请问要怎么办??只出现蓝屏然后就什么也干不了了..
台式机开机时蓝屏，显示错误码 STOP: c0000218 Unknow Hard Error c0000218 Unknow Hard Error。
主要的原因是由于非法关机导致注册表写入错误。（停电，强行关机等等）。
但是微软的解决方案没有能解决问题。
原因是注册表的Software文件（C:\Windows\System32\Config\SYSTEM下）已经损坏，在备份Copy
的时候，显示“循环冗余”检查错误。
解决方法：
（1）使用UltraISO+WinPeBoot.iso制作U盘启动盘。
（2）Bios中设定USB-HDD优先启动。
（3）使用上面的U盘启动，进入系统后在U盘中到FINALDATA ，启动之。在目录中到 
C:\Windows\System32\Config\SYSTEM\Software文件，选中、右键菜单中选择“恢复”，另存一个位置；
删除C:\Windows\System32\Config\SYSTEM\Software文件；把恢复后的文件Copy至C:\Windows\System32
\Config\SYSTEM下
开机成功启动。
(TIPS:USB键盘要在Bios中设定后才能在DOS下使用)
案例2：    公司同事东芝A100笔记本电脑突然无法登陆系统界面，重新启动后出现蓝屏。系统报stop:c0000218
unknown hard error Begining dump of physical memory，然后系统从1-100重复检测。安全模式也是同
样的问题。用效率源检测只发现了一个坏道。
个人感觉应该不是硬件方面的问题。手边的XP安装光盘无法进入修复XP的选项，遂就使用XP PE盘
，在PE下使用命令提示符c:\windows CHKDSK.EXE /R.系统进行自动检查和修复，一共有5步，时间可能比
较长，5步检测完了以后会修复一些错误。然后重新启动电脑，熟悉的界面又回来，本次问题按照微软官
方的说法应该是系统的注册表文件损坏，或者是系统碎片太多造成的。
经过修复以后系统正常了，前后大概花了1个多小时，其中有45分钟花费在效率源检测硬盘上了。
现在将这个过程记录下来和大家分享，希望以后有碰到这种情况的朋友能看到这篇文章，能够给您一点启
迪。
关于stop c0000218 unknown hard error　蓝屏错误的解答
SYMPTOMS
A Windows-based computer displays the following Stop error message:
Stop 0xc0000218 (0xe11a30e8, 0x00000000, 0x000000000,0x00000000)
UNKNOWN_HARD_ERROR
-or-
Stop: 0xc0000218 {Registry File Failure}
The registry cannot load the hive (file):
\SystemRoot\System32\Config\SYSTEM or
its log or alternate.
It is corrupt, absent, or not writable.
NOTE: The parameters in parentheses are specific to your system configuration and may differ
each time.
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CAUSE
A Stop 0xc0000218 error message means that a necessary registry hive file could not be
loaded. This error message can occur if the file is corrupt or missing. To resolve this
issue, you can reinstall the operating system and restore the registry files from a backup.
The registry files may have been corrupted because of hard disk corruption or some other
hardware problem.
This error message can also occur if the driver has corrupted the registry data while
loading into memory, or the memory where the registry is loading has a parity error. In the
latter case, turn off the external cache and check the memory chips.
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RESOLUTION
To resolve this issue, follow these steps: 1. Start your computer by running the Recovery
Console, run the chkdsk /p command on the drive, and then restart your computer. Test to
determine whether the issue is resolved. If the issue is resolved, do not complete the
remaining steps. If the issue is not resolved, go to step 2.
2. When Windows loads, press SPACE BAR when the "Load Last Known Good" message appears.
3. Complete a parallel installation, and restore the registry files from a tape backup. To
do so: " Reinstall Windows in a separate folder.
" Restore the damaged registry hive from backup. This procedure is specific to the backup
application that you used to make a backup. Consult the documentation of your backup
application or consult the vendor if you need assistance. Typically, this procedure requires
you to restore a system state backup to an alternate location, and then copy the appropriate
registry files to the %SYSTEMROOT%\System32\config folder of the damaged operating system.
" If you do not have a tape backup, include the backup of network servers and production
workstations.
NOTE: If Windows is stored on a FAT partition, you can restore the files by using another
computer and by copying the registry hive files to the %SYSTEMROOT%\System32\Config
subfolder.
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MORE INFORMATION
If the Stop error message was caused by a hardware problem (for example, bad sectors on the
hard drive), the drive may require a low-level format, repartition, reformat, and a restore
of the entire system from a tape backup to clear up the problem. Although this would be the
most drastic case, if the Stop error message was caused by a physically bad sector, the
sector must be relocated with a low-level format.
For more information about a similar problem that occurs in Microsoft Windows XP, click thewindows错误恢复
following article number to view the article in the Microsoft Knowledge Base:
307545 ([url]support.microsoft/kb/307545/[/url]) How to recover from a corrupted
registry that prevents Windows XP from starting