Hi BiGZiG
STOP 0x00000109: CRITICAL_STRUCTURE_CORRUPTION
Usual causes: Device driver, Breakpoint set with no debugger attached, Hardware (Memory in particular).
Your latest dump file lists Memory_Corruption as the probable cause which usually indicates out of date Drivers, incorrectly configured Memory Timings, mismatched Memory or Bad Memory.
Old and incompatible drivers can and do cause issues with Windows 7, often giving false error codes. Random stop codes can often indicate hardware issues.
As a Priority:
Can you fill in your system specs under your user profile? See Link Removed for help if needed.
At a minimum we need to know your MoBo details.
There are a few drivers that could do...