My computer is a refurbished Lenovo ThinkPad t450.
I purchased it two years ago.
The computer came with a 250GB SSD, it has the word Micron written on it. I assume that is the name of the manufacturer.
I had kept my old 500GB HDD from my old HP laptop. I would interchange the drives every now and then to access more storage space.
The computer has been working fine all along.
My computer came with a Supervisor Password on my bios and I mistakenly tried updating my bios, naively thinking this would "fix" the problem.
All this so I could disable virtualization as was required for Bluestacks installation.
I downloaded the correct update tool for my device from the Lenovo website and ended up updating the firmware and chipset through it.
On further research, I found out that there is an older version of Bluestacks that runs with hyper V. and ended up installing that.
A few days went by everything was good.
One day I decided to update my windows and that's when I believe the issue started.
I realized that some of the features in some of my applications were no longer working properly and that I could no longer alter the brightness.
I ran dxdiag on the "run" window and was informed I was using the Microsoft Basic Display adapter and should update my OS.
I will attach the SSU report as soon as I can
After that I could no longer use the display driver that I was originally using, intel HD graphics 5500. I tried everything I could but to no avail.
As soon as the driver is installed the flickering starts and the machine is forced to restart . After which the Windows diagnostics screen is often triggered. But even if it restarts normally the driver only works for about a minute and then the flickering starts again.
By "works", I mean my GPU is detected as seen from the taskbar, and the Lenovo Diagnostics tool I installed.
I also ran the Hardware diagnostics tool on startup which reveal that everything was okay.
I even tried downgrading the bios, but that also did not work.
This happens at home.