Win7 not loading with black screen

Hi I need help

I was working on Ms office word and suddenly pc crashed and didnt respond at all even ctrl alt del


I finally did a hard restart and since that it is not loading at all


I have windows 7 pro on desktop core2duo 8gb rams


When I turn it on now it gives me normal F2 or f10 page, then it moves to loading page but suddenly it fades away giving black screen


Some times it takes me to the loading page and the loading bar keeps working forever


I tried these:
Unplugging everything
Mouse and keyboard
Reseating cables inside and reattaching them
Resetting Bios to default




Nothing worked plz help

I can't login man

UpDate:
the manufatcure screen shows them fades and get a black screen - after that in 10 minuted of waiting I get the Windows 7 Loading bar ... and it keeps loading and loading forever

I cam't even enter with F8 safe mode it doesn't do anything

Need Help ASAP

yup I guess u'r right maybe my hdd is having a problem

I inserted the win7 dvd and tried to repair and couldnt find any partition

I still have one hope.. which is to unplug the hdd and connect it externally using enclosure to see my data on it and then have a clean format and installation unless it was wiped out and not functioning anymore

Hey here's an update

I sent the hdd to a professional company and they said they can only retrieve my files if I can get same hdd whoch is seagate 500 and they will replace the old hdd board with new one

They said this will work 90%

What do u think? The hdd if found in the market with same old specs will cost me 60$ - and they will charge me around 120$ for doing this