I have a Lenovo Z51-70 laptop with Intel HD5500 and AMD R9 M375 graphic and windows 10. Recently my graphic driver on device manager after windows 10 update was disappeared. When I download and run auto detect Radeon™ Graphics, it says error 173. In device manager I haven't AMD driver and it shows only Intel HD. In BIOS the setting was on "switchable graphics". I even tried to install previous version of Adrenalin AMD from this site:
but still same error.
I changed my OS to windows 7 SP1 but the same error appeared. A technician updated BIOS version, it didn't help.
In device manager>system devices there is "PCI Express Root Complex" with no yellow exclamation mark.
Please help!!! Thank you.