anyone getting criticle error ? help mabey worked for me

hi anyways i was playing yesterday logged out for a couple hours when i tryed to relog in i get a criticle error message well i did som research on some other forums read alot of stuff and decided i would uninstall my sound drivers restarted my computer loaded war up and boom im in no sound all good then today i went looking for new drivers found some now i can play talk on vent and have sound wee hope this helps if anyone has this proble