Question Windows/drivers problems after temporary hard drive swap ?

[Ukraine Train]

Hi everyone,
In my laptop I recently swapped in a different (dying) hard drive because I needed to copy the files from it. It also had Windows on it from being in a different computer so my laptop was able to boot from it. I got the files I needed and swapped the original hard drive back in. Now the fun starts... it no longer recognizes a WiFi card or sound card, and Windows has various errors like when I click on the start menu I get a critical failure notice about the start menu not being able to open and I can't open device manager ("no app exists for this" message). How can I undo this mess I made? Can I force Windows to "reinitialize" somehow without reinstalling it?

The computer is an Asus G751J-T7094H.
Intel Core i7-4720HQ
Geforce GTX 970M
Windows 10

 

[Lutfij]

Which version of Windows 10 are you currently on? As for the older drive, what OS were they on? Mind getting into BIOS and seeing what your BIOS version is at the time of writing?

 

[USAFRet]

Was the original drive completely removed during this process?

 

[Ukraine Train]

At one point I had both the old and new drive in the computer to copy files from one to the other but it booted from the old drive (I thought it would load the old drive as just a second storage drive). Then I removed the old drive to get everything back to its original state and the problems started. Both Windows versions are 10 but I can't tell exactly which revision because almost nothing in control panel works (no associated app error).

BIOS info:
Vendor American Megatrends
Version 205
GOP version 84.04.1F.00.44 N80G750
At the bottom of the screen it says Version 2.15.1236