wow considering that you spill liquid on your computer you did an incredible job of cleaning it and getting it back operational. the issue could be with the cables maybe some got damaged? the port where it connects, or even in the screen itself. i would count my blessings though. you said that it is just annoying and i understand that. but this may be the best you are going to get considering the circumstances. but yeah check the cables and the port first to see if there is any damage there first. once again good job on making it operational again. and i hope what i have wrote helps a little.