No more display when laptop is turned on

Hello,

i have an hp pavilion dv2. my problem is, when i turned it on, all the lights are on like the power,,battery,etc. but there is no display at all.not even a p.o.s.t . as in nothing.
after a few sec, the hard disk l.e.d turn off. what should i do?do i have to replace it with a new hard disk? how about my files? can i still recover those? please help me, i have no back up copy of the files that were stored in my laptop. please send me an email response at n_trek@yahho.com . you also want to discuss every possible solutions in here.. thanx

alexa...