Hi Hiasm,
Your windows is crashed with multiple culprits. One crash is related to faulty
ram. I crash is related to Norton AV and 4 crashes are related to faulty ram.
Suggestion
1, Your version of Norton AV has known bug which cause blue screen,
2. Replace the motherboard.
3. I am not sure the 4 system crashes are related to faulty motherboard. After you replace the motherboard and the windows still crashes. Run memtest to stress test run.
Debug Report
Mini070906-01.dmp BugCheck 10000050, {bf606d46, 0, bf606d46, 0}
Probably caused by : hardware
Mini080406-01.dmp BugCheck 1000008E, {c0000005, 8054b534, f82255e8, 0}
Probably caused by : ntoskrnl.exe ( nt!ExAllocatePoolWithTag+673 )
Mini121106-01.dmp BugCheck 1000000A, {fcd136e0, 2, 0, 804fb488}
Probably caused by : memory_corruption ( nt!MiResolveMappedFileFault+69 )
Mini121406-01.dmp BugCheck 1000008E, {c0000005, 8054b567, f8473ae8, 0}
Probably caused by : SYMEVENT.SYS ( SYMEVENT+cc92 )
Mini121506-01.dmp BugCheck C2, {7, cd4, d0f9d90d, e15533e8}
Probably caused by : ntoskrnl.exe ( nt!ExFreePoolWithTag+2be )
Mini121606-01.dmp BugCheck 10000050, {fd4b9860, 1, 804d91b9, 0}
Probably caused by : ntoskrnl.exe ( nt!NtWaitForMultipleObjects+2ec )