I looked at two of your memory dumps under the debugger. Both indicated kernel memory corruption but in unrelated routines. Windows 8 has added a bunch of memory check of internal kernel data structures in a effort to catch virus infections. Theses same routines will also catch certain kinds of RAM failures that are not detected by previous versions of windows. (windows would just start acting strange, and break)
-I would boot and run a RAM test utility like memtest86 and check to see if I can find a RAM failure and pull the bad stick of RAM. Even if it passes the test you can still have bad RAM (thermal cracks on traces). Sometimes you can move your RAM into different slots so that kernel mode drivers are not loaded over the bad RAM. ( apps will still crash though but not the whole OS)
there are other causes and things you can check but this is the most likely.
(virus scan, sfc.exe to scan all of your OS files for corruption)