Please help debugging these minidump files

[deno777]

I have attached the last three files in my minidump folder. Could someone here please decipher these so I can possibly attempt to fix the crashes. The BSOD occurs randomly about 2x per day. Any help on possible solutions would be great too. Thank you!

 

[Hacb]

OK,
below is the section we need to look at:

[COLOR="Red"]BAD_POOL_CALLER[/COLOR] (c2)
The current thread is making a bad pool request.  Typically this is at a bad IRQL level or double freeing the same allocation, etc.
Arguments:
Arg1: 00000099, Attempt to free pool with invalid address  (or corruption in pool header)
Arg2: d6380c98, Address being freed
Arg3: 00000000, 0
Arg4: 00000000, 0

here is what BSO index says:
Usual causes: Device driver, ?Memory

first, I would test your RAM with this tutorial:
www.sevenforums.com/tutorials/105647-ram-test-memtest86.html