Hello there!
Seems like the dump files are very vague so we have to try the basics. You said you ran the Memtest. Did you run the MemTest86+ downloaded or the default Memory Test build-in to Windows? If you ran the MemTest86+ you have to run it over night i.e. 7 to 8 passes. Check this link
Hardware Diagnostic | Captain Debugger
Uninstall AsUpIO.sys
Driver Reference Table since it's known cause of BSOD it belongs to Asus Utilities it's best to remove any Asus Utilities except the drivers.
BSOD BUGCHECK SUMMARY Code:
Loading Dump File [C:\Documents and Settings\Shyam\_jcgriff2_\dbug\__Kernel__\062612-15693-01.dmp]
Built by: 7601.17835.amd64fre.win7sp1_gdr.120503-2030
Debug session time: Tue Jun 26 23:40:04.849 2012 (GMT+5)
System Uptime: 0 days 0:21:35.831
BugCheck F4, {3, fffffa8008457730, fffffa8008457a10, fffff80003595510}
Probably caused by : csrss.exe
PROCESS_NAME: csrss.exe
BUGCHECK_STR: 0xF4_C0000005
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
FAILURE_BUCKET_ID: X64_0xF4_C0000005_IMAGE_csrss.exe
Bugcheck code 000000F4
Arguments 00000000`00000003 fffffa80`08457730 fffffa80`08457a10 fffff800`03595510
BiosVersion = 0802
BiosReleaseDate = 12/21/2010
SystemManufacturer = System manufacturer
SystemProductName = System Product Name
MaxSpeed: 3200
CurrentSpeed: 3207
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