I just bought a new motherboard for my inspiron 4100, I bought it to upgrade the 4000 board I had, anyway... I installed the board just like the others I have done and when I turned it on the 3 lights on the control panel just below the lcd flashed quick, then the middle light started to flash, it flashed for about 10 seconds and then it shut off, could this be a bad board or bad cpu or crappy memory? Thanks.