Dell XPS Crashes .System repair,system restore ,safe mode don't work

Hi,
I am having the following system configuration

XPS L401X Base
Genuine Windows(R) 7 Home Premium 64bit (English)
Intel(R) Core(TM) i7-740QM Processor
6GB 1333MHz DDR3 SDRAM (1 x 2GB + 1 x 4GB)
640GB 7200RPM Hard Drive

Lately whenever i try to start my computer it pass the Dell Bios and then directly goes to the screen which states
Repair your system or
Start windows normally

When i chose repair system , it start downloading windows files and then launch the windows , but hung up at the sky blue login window with only movable cusor . When i choose to start windows normally it gives me BSOD momentarly ( hard to see the message) and then restarts again .

I tried with the advanced boot up options like
repair my computer , all safe modes , restore to last good configuration but it does the same and hangs at windows loging sky blue window .
I Tried to run the Dell PSA+ Diagnostic and it returns with 2000-0146 error . As per the Dell online solutions for this type of error ,I tried to reinstall the Hard disk but the problem still exist.

My Hard disk has 2 partitions C and D and all my data resides on D drive and Windows installed on C drive.

Please help me in making my computer working , without losing data .

Currently i am away from my home country and have no OS or recovery disk with me .

Regards,
Sunny .

Welcome to Windows Seven Forums.

If you have access to another computer I'd suggest you create a system repaiir disc.

System Repair Disc - Create

It won't re-install Windows, but it will get you into the advanced recovery environment, from where you can run chkdsk.

It does seem highly likely there is a major problem with your hard drive.

Thanks Seavixen32, for your quick response . However i have a limited knowledge with computers . I Do have a Another dell laptop with windows XP installed . How could i create a system repair disk with it . Even if my hard disk is bad , could i retrive data from the D-drive. My Laptop is stiil under few days warranty and will ask them to replace my hard disk .

I think that is probably the best option under the circumstances.