You didn't reveal which OS but most Windows versions have driver rollback. Here's a google you can modify to match the Windows you run.
https://www.google.com/#q=Windows+XP+Driver+Rollback
Hello! I updated some drivers from HP Customer Care and then restarted computer. When it turned on I couldn't use wifi. When I select troubleshoot problems it says: 1)"Realtek RTL8723BE 802.11B/G/N WIFI adapter has some problems connected with control program or hardware." (it was on croatian so I tried to translate it to you)
2)"A network cable is not properly plugged in or may be broken"
What should I do, I have only that laptop and wifi internet, writing this from work? Thank you!

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