Hello Sernad,
Thank you for posting your query on Microsoft Community.
I can understand the inconvenience caused to you and I appreciate your efforts towards resolving the issue. I will certainly help you with this issue.
If the issue does not appear in safe mode, there could be possibility of some background programs conflicting with the smooth running of the computer. To help troubleshoot error messages and other issues, you can start the laptop by using a minimal set of drivers and startup programs. This kind of startup is known as a "clean boot". A clean boot helps eliminate software conflicts. Check if it helps.
Refer to the link below on instructions to get in clean boot state:
How to perform a clean boot in Windows
http://support.microsoft.com/kb/929135
I would also suggest you to run a full computer scan with the Microsoft Safety Scanner to make sure that the computer is virus free.
Microsoft Safety Scanner: http://www.microsoft.com/security/scanner/en-us/default.aspx
Note: Any data files that are infected may only be cleaned by deleting the file entirely, which means there is a potential for data loss.
Important this section, if you modify the registry incorrectly, then serious problems might occur in Windows. Therefore, make sure you back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: How to back up and restore the registry in Windows?
Hope the information helps. Let us know if you need further assistance with Windows related issues, we’ll be glad to assist you.
Thank you