big sam :
I store all of my stuff on another hdd so why is the ssd so full, cant see anything obvious as to where all the data is
System Restore points is the likely culprit.
Also, install WinDirStat to see what else is on there. NOTE: this application does not show the space used by the Restore Points.
For the Restore points:
Find your System Restore settings, and see what that is set to.
Control Panel
System
System Protection
System Protection
Click on the relevant drive, and select Configure
It will show you current usage and Max use %