This message was posted on behalf of Intel Corporation
Thank you for posting in the Intel® communities.
Yes, after re-installing the OS, the drivers for the Intel® Optane™ Memory should be re-installed as well.
However, considering the fact that you are using laptop, I highly recommend you to contact the OEM in order to receive assistance to setup the module again. Laptops usually come with special settings, and it’s better to contact the OEM before doing any changes in the system.
On the other hand, if you re-installed the OS and didn’t disable the module beforehand, you will probably need to clean the module’s data first as it still has the data from the previous OS setup. If you disabled it before re-installing the OS, then it should be fine and you should be able to re-enable it.
You can confirm if the module is working or not through the application. You can download it from the following site (SetupOptaneMemory.exe): Download Intel® Optane™ Memory User Interface and Driver for System Acceleration
The application will install the drives too, so you can try it enabling the module, however if you have any issue, I recommend you to contact the OEM for assistance as the module came already enabled in the laptop.
I hope this information helps you.
Have a nice day.