DELL LAPTOP NOT BOOTING GIVING 3 BEEP CODE HELP URGENTLY N

MY Dell inspiron 15r laptop was working fine.I shut it dwn and the next day when I switched it on it did not start. It gave a 3 beep code and on checking the manual i found it to be A POSIIBLE CHIPSET /OTHER FAILURE. IT was not for sure that it is a chipset failure.
It happened before once but after some attempts it worked fine. This time it is not getting alright and booting.
I am unable to run the diagnostics but the harddrive is working because i hear the booting sound and the quickset leds and buttons alternatively light up which is normal .also i ma able to open the optical drive dvd tray by pressing the button and closing the tray. but there is no display or booting i do not see the windows logo or even the option to run diagnostic by pressing f10/f11/f12.

KINDLY LET ME KNOW
what is the problem?
is it possible to recover the data in teh hard disk?
how can i sort the problem. there is no authorised dell center where i stay
cana nything be done by myself to find out the exact problem without going out of city to find a dell center
i do not wish to send the laptop by sourier as it is already very fragile and it is not avisable for me to send it outside the city and i have no time to go out of the city right now but I NEED TO GET MY LAPTOP WIORKING BECAUSE I HAVE NO BACKUP AND NEED THE DATAIN MY SYSTEM FOR MY PROJECTS AND EXAMS
THANKS FOR THE HELP AND ADVICES
replya s soob as possible
Ruth