I have examined your dump reports, you do get many.
Each report has given a different driver, I do not think that any one of those drivers are the actual cause.
Lets start with a memory test and see what happens. If that turns up negative, we will test for drivers. Download memtest86 and test RAM www.sevenforums.com/tutorials/105647-ram-test-memtest86.html Run for 8 passes Ifpasses try a good stick in each slot for 3 passes If it fails do the same for 8 passes. In addition one of the reports, mentioned SPTD, this driver is know to cause BSODs, it is a component of Daemon or Alchohol 120%, please unintall this software using the unintall tool. Please remove any CD virtualizationprograms such as Daemon Tools and Alcohol 120%. They use a driver, found inyour dmp, sptd.sys, that is notorious for causing BSODs
Use this SPTD uninstaller when you're done:
After you follow the instruction, please post any new BSODs. With so many causes, it is highly unlikely that we will hit on it the first attempt.