i seem to encounter a similar problem, which might not have something to do with dead notes (?!) but this corruption, i have it - maybe - somehow any song with distortion is now overdistorted. for sure i use a peavey with active preamps, i know this sounds rediculous, but the songs weren't overdistorted in the first place..just started yesterdy. what i do is selecting a soundsetup which doesnt use any distortion ( which kind of negates the unique sounds of some songs), or lower volumes on said pedals, etc. i had to emergency-shut down my pc yesterday due to a water spilling on my pc. now im afraid, some custom tone is stuck on general settings. even in menu i still have to activate my own non-distorted custom sound setting to avoid heavy distortion besides from perma-muting all strings. this sucks :/ help me anyone ?! cheeers