Okay, so I run Windows on a 64x bit Desktop with the following specs:
Intel Core i5-3330 3.00GHz
4 GB RAM
AMD Radeon 7700 HD
Also, I read the issues of the newest build on the Windows Official Website, but I did not come across with my issue.
Furthermore, the freezes happen randomly. One can occur while I am playing a game, or while I'm just on my browser. They can happen while my PC is on for 1 hour, or for 5 minutes.
In the Event View I can see the "Critical Errors" under the "Windows" and "System" tab. Their description is showing the unexpected reboot I do whenever my PC hangs. It says: The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly and it's source is "Kernel-Power".