Would you please detail your DDR3 ram part number, and please inform us if your system is running at default and that includes the ram.
The BCCode 50 usually occurs after the installation of faulty hardware or in the event of failure of installed hardware (usually related to defective RAM, be it main memory, L2 RAM cache, or video RAM).
Another common cause is the installation of a faulty system service.
Antivirus software can also trigger this error, as can a corrupted NTFS volume.
Resolving the Problem - run a disc check for your hard drive, run memtest86+ to do a diagnostic of your RAM.
To help us help you - please provide as much information about your system and the problem as possible.