I have a dc7700.....yesterday night i went to hp website and downloaded a bios update....i installed that bios update and all went fine and restarted my pc....After restarting the cpu the monitor wont display.....i thought it might be a gpu issue i removed my gpu and powered oon using igpu...but still no display....i removed the ram, hardisk,dvd rom no boot....i reseated the processor still nothing....i also removed and repalced the cmos battery and pressed the reset button but no luck....now the problem i needed the PC for my school work so please if anyone can help me