My window AC unit isn t working.?

I have a Frigidaire window unit model LRA067AT7

its about two years old, never had a problem with it until it started to smell REALLY bad, turns out it was filled with mold. so after watching a video on how to clean it, I opened it up, cleaned it properly, cleaned all the gunk etc out of it, washed it, dried it for two days, made sure all the components were dry, and then reassembled it and plugged it in. and it worked fine.. for about a day.. then its settings changed itself to economy 71 and it turned on and off a lot.. then it simply stopped working. I hit the GFCI reset button and cleared it.. reapplied power, the unit beeped at me, the buttons and temp meter didn t light up when it beeped.. then after a moment. all the lights flashed, the units temp meter read what I assume is a code of double numbers. 44-77. and then it simply went dead.. now whenever I plug it in or apply power to it, it simply beeps at me, and then stays off.

its clean, I don t see any damage, the circuit board seems fine, there is no internal problems. nothing binds, nothing torn or w/e.. I don t know how to check the pressure for the Freon but I would assume its fine since after I cleaned it.. it started to cool very quickly like it was brand new. so I doubt theres any leaks in it.

any ideas?