|i have hp lab top "pavilion dm4"|
Intel(R) Core(TM) i5 CPU
support Microsoft DirectX11
the problem ...
Some times i got messages when my computer starting up
such as " insert boot disk "
" hard disk not exist "
" boot device not found "
but when i toke buttery off for awhile and put it back it starts normally again
i made recovery but the problem still exist
i want to know what is the problem with it and how to solve it ????????