It's worth doing especially if you have a standard hdd as they do improve a lot speedwise after a refresh.
You'll need all drivers from clevo if a clevo chassis or msi if not, then after the reset you'll lose all your data so make sure it's backed up, then you'll have to reinstall each driver which is pretty straightforward.
If you go to www.clevo.com.tw and find the downloads section, then search for the model number which will be in the group P15xsm-a/P17xsm-a. There you'll get all the available drivers, you'll need all but the graphics which you should get direct from nvidia.