I have an Asus K52J which I upgraded to Windows 10. It works as Windows 10 works, some bugs I am used to.

 

One annoying thing is that during upgrade I cannot enable bluetooth nor cannot see any bluetotth installed on my laptop.

 

Any tips how I can get bluetooth "back"!

 

Thank you in advance for your valuable info!

 

Paulus

Give Driver Booster ago plus its free .. http://www.majorgeeks.com/files/details/driver_booster_beta.html

I'm surprised it didn't port the existing driver.

Try installing the Windows 7 one which you can download from the link below.
 

http://www.asus.com/Notebooks/K52JV/HelpDesk_Download/