Hello Biro,
Thank you for posting your question on Microsoft community.
We need some more information about the issue so that we can help you better.
Do you receive any error message or code when you say, "Computer keeps searching for updates"? If so, what is the error message or code?
I appreciate you for providing details about the issue.
This issue may occur due to software conflicts or corrupt Windows update files and settings.
I would suggest you to try following methods and check if it helps.
Method 1:
Run Windows update troubleshooter and check.
Refer:
Open the Windows Update troubleshooter
http://windows.microsoft.com/en-US/windows7/Open-the-Windows-Update-troubleshooter
It makes sure that your computer is connected to the Internet, and checks to see whether your network adapter and Windows update services are running correctly.
If it does not help, use method 2.
Method 2:
Perform clean boot and then try to check for updates.
Refer this article:
How to perform a clean boot in Windows
https://support.microsoft.com/en-us/kb/929135
Clean boot is performed to start Windows by using a minimal set of drivers and startup programs. This helps eliminate software conflicts that occur when you install a program or an update or when you run a program.
Note: After you have finished troubleshooting, follow these steps from section “How to reset the computer to start as usual after clean boot troubleshooting” to reset the computer to start as usual.
I hope this information helps.
Please do let us know if you need any further assistance.
Thank you