Need to Fix Drivers (Nvidia, Hybrid SSD, etc) after re-installing Windows 8.1?

Hi everyone!
I have a new Lenovo Z50-70 (i7, 8GB RAM) laptop and recently re-installed Windows 8.1 on it (to get rid of the bloatware).
1. Do I need to fix drivers or something to enjoy the Nvidia 840M (4GB) performance?
Also, the laptop has a Hydbrid HD (1000GB) and SSD (8GB) where the 8GB SSD is supposed to be used by Windows, to speed things up.
2. Does windows make use of the 8GB SSD automatically or do I need to do something to make Windows use this faster disc?
3. Anything else I need to fix to keep performance optimized?
Grateful for any tips!
Thanks!
P.s. I'm not sure this is the best section of the forum for posting this, my appologies if I chose the wrong place.

You can get the latest drivers from here. As for the SSD drive issue, I believe that is an automatic function. I had a hybrid drive on my older machine and there was no special software for it. With the newer machine that I have that uses Windows 8 windows is still installed on the HD. I believe the smaller SSD is where windows 8 dumps the system when it goes to sleep.
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