Recently installed a M2 samsung ssd, but is not showing on windows. Any tips?

So, yeah. A couple of weeks ago the thing did appear, but then one day it did not, and I've no idea what happened. In the disk management app the thing shows up, but the only option I get is to "Convert to dynamic disk" and "properties", not to create new volumes...and for some reason it has less memory than what the thing says it has? Any help would be apprecated you guys