buttons not workin

ok i have a mogul 6800 and have not used my hard buttons for some time now. the scroll wheel works, round nav. button and power button. nothing else works while normal use. but heres what i dont understand, i can still hard reset my phone, and also put it in bootloader mode. but under normal circumstances they do not work. can some one help. i have taken it completly apart to see if by some chance something come lose, but nothing. also have tried a stock rom, sevral stock roms,and still get the same out come.