Hi Lim Jy and Welcome to The Forum.
STOP 0x0000000A: IRQL_NOT_LESS_OR_EQUAL
Usual causes: Kernel mode driver, System Service, BIOS, Windows, Virus scanner, Backup tool, compatibility.
Your latest dump file lists ntkrnlmp.exe as the probable cause. This is a Windows System file and for it to be the cause of your crash is highly unlikely.
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:
AVG is known to be a cause of BSOD's on Windows 7 systems. Suggest that you uninstall it. Download the correct Link Removed for your system (32 or 64 bit).
If you have AVG ID...