Yep, there are numerous indications of memory corruption, page table entries are being corrupted. These are minidumps so it's difficult to find the exact cause, probably by calling MmUnlockPages twice.
It may well be RAM issues but the OS may well be corrupt as Carwiz has said.
I have a few suggestions, to try that might help but I can't promise anything.
Run a disk check to check for system errors and bad sectors which can cause issues:
Code:
Version 6.1.7600 Build [COLOR="Red"]7600[/COLOR]
http://www.sevenforums.com/tutorials/433-disk-check.html
Make sure you have Service Pack 1 installed on your computer.
Learn how to install Windows 7 Service Pack 1 (SP1)
Use Kaspersky's TDSSKiller Anti Rootkit utility
http://support.kaspersky.com/viruses/disinfection/5350
Memtest86 will test your RAM
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Run Memtest86 for at least 8 passes so we get enough information to confirm that your RAM isn't failing
If none of the above finds nothing then one last attempt would be Driver Verifier.
Enable driver verifier but only enable the options: Standard settings and IRP logging step 3.
Don't enable Force Pending I/O Requests
Enable Driver Verifier to monitor the drivers.
Driver Verifier -Enable and Disable
Run Driver Verifier for 24 hours or the occurrence of the next crash, whichever is earlier.
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We use Driver Verifier as it puts a stress on the drivers, and so it makes the unstable drivers crash. This should flag the driver responsible in the dump file.
It
Driver Verifier will make the system laggy, this is normal so don't worry.
Before enabling DV, make sure that you have earlier System restore points made in your computer.
If there are no points,
make a System Restore Point Manually
Post back the results.