Yesterday, I began to have an error cycle of Data Execution Prevention errors naming Windows Explorer as the problem. The error commences on startup.
Concurrently, a problem has come up where I've been getting a DirectSound error code 88780078 when I try to run WinAmp/anything with direct sound output. Now, when I try to resolve this error by entering the Sounds and Audio Devices tab in the Control Panel, all options in the audio tab are greyed out and unable to be changed.
I have a suspicion that the two problems are linked, as they began simultaneously. Note that if I ignore the DEP error window, I don't actually have any noticable negative effects - my computer is running pretty much as it was previously, outside of the audio error.