There are event log errors indicating Windows is failing to write crash dumps occasionaly.
Usually this is an indication of some storage related issues. I would update the SSD firmware to the latest version before doing any other steps. Some models of solid state drives are famous for buggy firmware which might cause hangs, freeze and BSOD. If you are having difficulty finding the update, please post the exact make and model of your SSD in next reply.
Event: Log Name: System
Event ID: 46
User Name: N/A
Crash dump initialization failed!
Also run a memory diagnostic using the freeware tool Memtest86+.
RAM - Test with Memtest86+ - Windows 7 Help Forums
Run at least seven or more passes (preferably overnight) and report whether it detect any errors.