ASACPI.sys Sun Mar 27 22:30:36 2005 (42476C4C)
A known BSOD maker in Windows 7. The 2005 version of this driver
is known to cause BSOD on Windows 7 systems.
Download the ATK0110 utility from here - ASUSTeK Computer Inc. -Support- Drivers and Download P7P55D LE
Expand the "Utilities" tab and it will be the 12th one down on the list
After you install it browse to C:\windows\system32\drivers
and check the properties of ASACPI.sys and make sure it now says 2009.
Start with that and see if it helps out. If it doesn't then I would like you to run some hardware tests
1. Memtest86 - Run for 7-8 passes - RAM - Test with Memtest86+
2. Prime95 - Run all three tests for 3-4 hours each or until fail - Hardware - Stress Test With Prime95 BSOD BUGCHECK SUMMARY
Built by: 7601.17640.amd64fre.win7sp1_gdr.110622-1506
Debug session time: Sat Feb 4 15:13:20.384 2012 (UTC - 5:00)
System Uptime: 0 days 4:07:59.726
Probably caused by : ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+37bba )
ERROR_CODE: (NTSTATUS) 0xc0000056 - A non close operation has been requested of a file object with a delete pending.
BiosReleaseDate = 12/14/2010
SystemManufacturer = System manufacturer
SystemProductName = System Product Name
CPUID: "Intel(R) Core(TM) i5 CPU 750 @ 2.67GHz"