All your dumps come with one bug check - 7A, its usual causes are:
STOP 0x0000007A: KERNEL_DATA_INPAGE_ERROR
Usual causes: Memory, Paging file corruption, File system, Hard drive, Cabling, Virus infection, Improperly seated cards, BIOS, Bad motherboard, Missing Service Pack
Things you should do
Re-seat the SATA and Power cables and run Disk Check on your hard disk for file system errors and bad sectors on it:
Upload a screenshot of your hard disk using crystal disk info:
I see Seatools installed on your PC, did you already take long and short tests? If not done:
Hard drive test both short and long with:
Also the DOS version of:
Please uninstall AVG during these tests. It's known to contribute in BSODs. Use relevant removal tool by searching in google.
Recommended antivirus program for Windows 7 based on stability compared to others:-
Run a full scan with both (separately) once downloaded, installed and updated.
Let us know the results