Thanks for the info. I actually tried but it didnt really help. So I left it and went for work. Yesterday, when I got back home thinking that I would actually take it to the customer service where I bought it. But then I started the computer to see if I can install older drivers or something...
Voila... It started just fine. Resolution is normal again 1080p@60Hz
I finished the re-installing of all drivers after formatting the system. Ran benchmarks heaven and valley. Overclocked up to 1150Mhz and +9% power with 1175mV (default voltage btw). It ran everything buttery smooth in full details/aa etc...
So I am assuming maybe it needed some time for cooling off lol.
OR
The gpu was designed to scare people off to not to overclock lol... I dunno...
Anyways thanks for the help. For now it runs good. Crysis3 is running smooth over 50fps on high details, 73-74C temps under full load (i guess its a bit high)
For anyone who might have encountered this problem like me... Just let it cool off lol.
Thanks again for reading.