i need laser help big time!!!!

[sublime90]

ok last week i recently installed my brand new laser. everything is working perfect untill tonight. out of no where during the middle of a game the laser starts making these loud reving noises like a dirtbike. now it wont load any games!! and just continues to make these crazy loud grinding reving noises. whats goin on with this, do i need to adjust the pots?? i slightly moved the dvd pot to the left ( i read that before you adjust it higher (to the right) its good to always adjust it lower incase) i dont understand why it would just do that out of no where. this is really frustrating