Have a strange issue with a z77x-ud5h. When I try booting am getting message bios has been reset do you wish to 1. continue 2.reset default settings 3. enter bios setup (maybe not exactly word for word or even correct order am writing this by memory) however none of the usb are working, tried onboard usb2, usb3, headers but am unable to go further as keyboard not functioning, dont have another usb keyboard but tried the keyboard on two other pcs and keyboard working fine. Tried both bioses same issue. post digital display stops at A6 which I read is enumeration of icsi ports. Any help appreciated. Hardware I3770k, 16gb corsair vengeance using on board display.