Griev
I don't know if you have ever written to a technical support for a problem but we always ask you to give a maximum of information, and the configuration of your PC !
Without information, it is impossible to find the problem in the same way that your doctor can't give you the right medicine to treat you!
Which windows? 32 or 64 bit ? how much ram, which graphic card and which CPU ?
Is it the official version or a compressed version?
The latest version of SN has been optimized to clear the memory of Windows to avoid overloading the RAM, but Rpg maker like any other software can not clear the memory of graphics cards !
Freezes are caused by a problem related to graphics or a data overload between two components !
The first thing to do would be to update your Windows and all your drivers !
This is just an opinion, but freeze + crash + no error message, means that one or all of your components are not recent !
But as I said, no information, no diagnosis but only suppositions !