Most of the time, when we meet a error in Windows, it happens that we don't have the faintest idea about what it represents the error code respectively, so neither about what exactly caused it or what is its importance. Most are looking the meaning of the errors pe internet hoping to find out from the experiences of other Windows users how they can solve them, but I can't find it solutions every time, and in some cases they don't find the right solutions, which inevitably leads to others fall or even more confusion.
For this reason, the simplest is to search the meaning of the errors, and details about how they can be solved, directly at the source, namely, in the documents and web pages about them, made available by Microsoft.
Windows Error Codes
The document Windows Error Codes list and explain the most common error codes related to Win32, as well as the values HRESULT or NTSTATUS.

Download Windows Error Codes de pe site-ul Microsoft.
The document is quite thick (533 pages), but for those who know how to use it Search-ul will not present any problem.
System Error Codes
Most applications which we install in the system also contain one cod which allows them to return (recover) after eventualities unexpected system errors. When such errors occur, the application can request user intervention or it is even possible to recover by itself, and in the worst case, he may need one system restart to function properly again. Click on This link to display the page that lists all system errors and their meanings.

Events and Errors Message Center
USING Events and Errors Message Center, Windows users can search detailed explanations about Windows operating system errors, recommendations on how they can be solved and additional support links and resources for the users who meet them. To be able to search for information about a certain error, users need details such as Event ID, Event source, Message Text and File Name. These values can be easily identified in the logs Event Viewer (Event Viewer can be accessed in Control Panel > Administrative Tools).

Pentru a accesa Events and Errors Message Center dati click here.
Note: It is possible that not all system errors have easy-to-perform solutions, therefore we recommend that you contact specialists to avoid possible consequences that are more unpleasant than the errors in question.
STEALTH SETTINGS – The complet lists with Windows Errors and their meanings
after installing windows 10 on my pc the error message 0x80072ee7 appears how to solve the problem