A month or so ago I upgrade my motherboard and CPU.When i tried to restart my system after making all the setup, system freezes suddenly. System gets freeze at the screen with all the information about the Processor, Hard Disks, PCI Devices etc. When I tried reformatting HDD before changing the motherboard i tried formatting so that it could be reformatted. And for that i checked for the boot menu, the keyboard wasn't working. Additionally, the keyboard wouldn't work in the setup either. Although it functions perfectly well on other computers and did so to for me to actually get into the setup and boot menu.What would be the problem with my keyboard, I have no clue..