Well, the audio was disabled that occasion because I had to boot into safemode to get past the BSOD and run those analisers. Speaking of safemode, I've found if I'd booted into safemode the previous occasion, I can get all the way booted without BSODing. On the other hand, this day I had gotten all the way to desktop (I'd simply shut down last night after the above), started launching my usual Thunderbird (which has a lot of mailboxes in it), and then Firefox (which has a lot of pinned tabs), when suddenly BOOM! BSOD
Another issue I've been noting of late is that, often at startup (bot not always) I'll hear for a few moments a flurry of device-is-disconnected and device-is-connected sounds in rapid succession, as if I were rapidly plugging in and taking out a USB device. This settles down after a bit. Well, THIS time I got that flurry of disconnect/reconnect sounds later on instead, some moments after I'd gotten all the way to desktop, and shortly before I started launching things. It was still doing that this time when the machine BSOD'd.
Oddly, it seems to have rebooted fine after that. oO THIS time I didn't get the flurry of disconnect-reconnect-disconnect sounds. I haven't dared launch Thunderbird or Firefox so far this session, though. I have SkypeLauncher (renamed Launcher for Skype) which launches 3 different Skype sessions a measured delay after startup, for some reason this occasion, one of those sessions froze up at the login stage, so I killed that one from Task Manager.
Anyway, attached is a fresh W7F zip.