Computer Software Files Damaged or Corrupted.

Virus or Trojan infections on Your system.

Windows System Files are missing.

System Registry Files are missing or corrupted.

If you are familar with computer skills, please try the following manual steps to eliminate Fehlercode 00000027 Windows Xp error.
1. Update your windows system to the latest version.
Sometimes, people prefer to ignore microsoft's update remind messages. This may cause the critial disaster for your PC. Please click Start, Control panel, System Security, windows update step by step. Then click check for update to see if you have missed the latest update.
2. Uninstall the recent installed software at once.
Attention: Before you try to install a new application on your PC, please confirm that you download the software from its official website. Because the 3rd party website often bring virus or trajon for your computer.
3. Perform SFC utiltiy for your computer.
In general, if you cannot fix Fehlercode 00000027 Windows Xp issues, you can perform a sfc for your computer. This procedure will help you fix most dll error. SFC is a free utility which can scan the corrupted windows files and restore it. You should know that damaged system files may cause serious disaster for your PC.

Please do the following steps: (Windows 7 or Windows Vista)

1. To do this, click Start, type Command Prompt or cmd in the Search box, right-click Command Prompt, and then click Run as administrator. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.

2. Type sfc /scannow and press "Enter" button

3. You may see the following message.

• Windows Resource Protection did not find any integrity violations. (This means that you do not have any missing or corrupted system files.)
• Windows Resource Protection could not perform the requested operation.
• Windows Resource Protection found corrupt files and successfully repaired them.
  
• Windows Resource Protection found corrupt files but was unable to fix some of them.  (In this situation, you had better do a system restore.)

See more details:http://support.microsoft.com/kb/929833/en-us

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Clean registry: Fix registry errors and deletes dead keys or values such as startup entries that a 3rd party application forgot to delete, which could lead to problems during startup. It also effectively remove invalid file type pointers and orphaned entries within the list of installed applications which may cause problems when installing or uninstalling applications.

Dll Fixer: Have you ever been bothered by dll missing error? Luckily for you, with SmartPCFixer, you will never be annoyed by dll errors. SmartPCFixer has Dll Download function which is capable of downloading and registering missing dll files for you with simple clicks.

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If all the above steps still doesn't work, please try to do a system restore for your computer. SmartPCFixer is also able to perform a system restore for you.