Hi, i've got same problem with Starcraft II and other games. I checked logs and there is always 0xc0000005 error. Usually after 15 mins of game.
I checked RAM with windows diagnostics - no errors, checked entire computer with antivirus, changed video to integrated. Installed latest video drivers.
Interesting that Warcraft 3 does not crash, seems its an old game that doesnt need a lot of resources.
Still can't find a problem...
Error from log:
<Inspector.Summary> ACCESS_VIOLATION (0xC0000005) (occurred at 0023:71907323. The memory at '0x0D7E83EC' could not be read.)
<ErrorType> ACCESS_VIOLATION (0xC0000005)