Unable to install/repair Windows 7

Here is my System Specs:

Dell Inspiron N5010 4GB RAM Windows 7 Home Premium 64-bit OS

I was just starting the computer the other day and it gave me a blue screen immediately after Windows Loading screen.

UNMOUNTABLE_BOOT_VOLUME

TECHNICAL INFORMATION:
*** STOP: 0x000000ED

So I decided to reinstall the OS. But it is stuck at "Setup is Loading" Screen for hours together. I can't even repair the OS.

Any help is appreciated

You need to repair a filesystem - chkdsk c: /f To do this you need to boot system from LiveCD, or plug your HDD into another computer.

Here is Microsoft article about this problem - http://support.microsoft.com/kb/297185/en-us