BSODs sound quality malfunction and random files corrupted

ok so my custom build computer was stable for a long time and now it is a never ending error machine. and this covers so many topics i don't even know where to post this.
it started with the BSODs 0x19, 0xa1, 0x1, 0x4e, 0xa0000001, 0xd1, 0x7e
bad pool headers, pfn list corrupt, ntfs corrupt, driver_irql_not_less_or_equal and a handful of others
i have replace almost ever part of this computer and reinstalled windows no less than 8 times.
i have run SFC and scandisk but i constantly find my files chewed up and unusable.
i have run kaspersky but found almost nothing but the occasional bad cookie.
my rainmeter skins error and never work properly again even when re-downloaded.
now my sound stops functioning after a certain length of time. it sounds like its running the windows 7 sounds through the internal speaker even though it is running through the soundblaster z. i know it isnt the card because when i feed sound though the line in it sounds fine even though none of the systems sounds are working. what could be damaging my system? is it a worm and if so why isnt it being detected?
also my system has never managed to work with platform update KB2670838, com surrogate and svchost overload.
electric sheep has been crashing.
i've got the BSODs under control now but the sound error and file corruption is still happening. what in gods name is going on?

update: it's freezing up without ever reaching the blue screen and no error messages were logged