hi i have a asus k53sm (i5 ,4gb ram,nvidia gt630m 2gb dedicated) suddenly one day when i started the cod mw-2 game it freezed my son pushed the power button and it went to sleep or hibernation in between i forced the system to shut down by holding the power button and when again i started the laptop it dint boot black screen i tried every thing when nothing worked i took the laptop to a repair guy he told me that bios is corrupted he took the bios chip out and got the back up of bios i downloaded the new bios update from asus site but he told me he needs 4mb bios and the downloaded bios was of 2.5 mb some i manage to download the 4 mb bios from this site (asus k53sm) he wrote the bios but it dint boot he tried sevral bios but the result was same , now i m posting the link of my backup i tried to figure out what was missing but couldnt do it can some one plss tell me how to correct the bios or someone can correct it i will be very helpful my laptop is 14 months old and 3 months back i changed the motherboard from my pocket and again i cant afford of changing the motherboard,