Good idea; but one other thing you should do is
PHYSICALLY REMOVE the GPU card/chip if possible in that laptop prior to reinstalling all the drivers. Not many laptops have a GPU card/chip that is removable; I've personally never seen one. But, after 5 years of working these tech forums I've since learned that there are many high-performance laptops such as gaming laptops or engineering laptops that come with a built-in GPU chip
AND a removable GPU mini-card the size of a WLAN card (wireless card) that can be changed out if they fail. Of course, the built-in GPU chips cannot be removed as they are physically hardwired into the Motherboard circuit board.
You should check your laptop specs to see if you have one of these types of laptops. If so, you should remove the GPU mini-card and reset your BIOS settings to only run the built-in GPU chip. Then wipe your hard drive (after testing it first!) and reinstall your W10 via Clean Install media you now have in hand. Let W10 complete the upgrade to W10 CU. Once that's done, I'd make an Image backup file using a free utility such as
Macrium Reflect,
Acronis TrueImage, or
EASEus TODO. We've tested all 3 of these on W10 including W10 CU and they work good.
From their, once you've got the W10 CU successfully installed and working on the Internet with the laptop, power it off AND the laptop battery unplugged and AC adapter removed, and reinsert the GPU Card. Make sure you boot into the BIOS and
disable the built-in GPU chip, so both the BIOS and W10 will look to initialize the newly inserted GPU card and install the correct drivers. If errors return, then follow Neem's advice above in Post #2 and see if reinstalling the GPU card drivers from W10 will work. Hopefully, that produces a fix once your laptop is running the W10 CU.
If that fails, you can then visit Lenovo's site and NVidia's site and download their GPU card drivers for W10 and see if that corrects the problem. Not sure if this scenario applies to your particular laptop, but even if it doesn't you now know about it, and so does anyone else looking at this thread with a similar GPU error.
Best of luck,
<<<<BIGBEARJEDI>>>>