I learned this tutorial from Youtube a long while back. You won’t have to restart your computer, but you need to save your drawings and restart the program you’re using.
Step 1) Go to My Computer/This PC (or any other variation) and right click
Step 2) Click on Manage
Step 3) You should get access to this menu. Double click “Services and Applications”
Step 4) Double click “Services”
Step 5) You should get a long list of all these manageable functions. Scroll down until you find “Wacom Professional Service”. Right click it
Step 6) You can either click “Restart” or press “Stop/Start“ manually
Now it should refresh and return things back to normal, and once you open up your program again pressure sensitivity should be back~! Hope it helped! (Also if you are curious, I use the Intuos Pent and Touch small)