As far as your Nvidia Driver it seems to be installed correctly for your 2060 GPU according to GPU-Z.
The AMD Integrated Graphics doesn't show up in GPU-Z (Click at the bottom where it shows the model of your Nvidia GPU card) or in Device Manger under Displays?
Any errors or Yellow Exclamation marks anywhere in Device Manager?
Go to Device Manager -Displays and see if you see the AMD IGPU. If you do, uninstall it and then click on "Scan for Hardware Changes" which will reinstall the AMD APU Driver again.
If that doesn't work then use Device Manager to manually install the AMD Driver by choosing it from a list of AMD drivers. Then see if the IGPU is recognized and working again.
Upload a image of CPU-Z showing your Processor installed and Main Board Make & Model. Just to verify you have the same APU processor from before.
Otherwise I would go back to Lenovo Support and let them know the AMD Driver is saying there is no supported AMD Graphics in your laptop.
Check in BIOS for any setting that refers to the Integrated Graphics (GFX or IGPU etc). Maybe the integrated Graphics is disabled in BIOS.
EDIT: AMD error 182 is saying you have a unsupported AMD GPU. Another words, The driver is not compatible with the GPU you have installed. It is the wrong driver for your GPU.
That is why I need for your to run CPU-Z to verify you have the same AMD APU processor that you had before. It is possible when the Motherboard was replaced they replaced it with a different APU processor. But I seriously doubt that happened but CPU-Z will eliminate that issue.
also you can try and uninstall the Nvidia Driver and then try installing the AMD APU driver first and see if it installs successfully. Possibly the Nvidia Driver is interfering with the AMD installation.
Before removing the Nvidia Driver make sure you have that driver downloaded first from Lenovo Support.
also use DDU with the internet disconnected temporarily.
EDIT: Make sure you have the latest version of Windows and it is fully updated via Windows Update.
