Why does not see the video card after replacing it with an SSD?

Question

Windows

Good day.
In general, yesterday I bought an SSD drive for my Lenovo IdeaPad 520-15IKB laptop, because. the built-in had an extremely low data transfer rate. I made a replacement, installed Windows 7 (before it was my native ten).
Everything seems to be like in a pharmacy, but some strange things are happening with the video card. In the device manager, you can see the Nvidia GeForce MX150, which is what I need. In addition to it, there is a standard VGA adapter, which is used as the main one. Tried everything in my power - deleted all drivers, installed new ones from the official site; did scans of drivers and updates using third-party software. Everything is clear. If you open the DirectX diagnostic tool, we see that standard VGA is used.
I also tried to disable VGA and boot without it. In this case, everything is loaded, but in the diagnostic tools where the video card is written N / A.
What could be the problem?

Answer 1

Put back ten.

Answer 2

The problem is not in the SSD, but in the fact that you installed a different OS.
It needs drivers.
All the problems described are the result of incorrect installation of drivers.
All.

Answer 3

How did you uninstall the nvidia driver? Need in safe mode through this thing Display Driver Uninstaller Download

Answer 4

On laptops with dual video cards, the discrete turns on when you need increased performance (in games), in other cases the built-in one works.
I have a lenovo z510 with a similar configuration dxdiag on the "Display" tab shows built-in, but on the "Render" tab - NVidia. OS: Win10.