Can you verify that your resolution in windows is set to 1440×900?
Everything I am finding is saying press menu then auto. Personally I would look for a factory defaults / reset option.
Degassing (removing static/magnettic) charge build up only applies to CRT tube displays.
I've personally had Acer and HP monitors quit. If you decide to get a new one soon I would go with something like NEC, Samsung, Dell.
I am unable to find any kind of special procedures, was it some kind of "service menu" ?
Would you like me to request a refund for you or open this up to other experts to see if any of them can help you?