Dell Inspiron N5040 doesn't start anymore

Hi there,

I've got my Dell Inspiron n5040 for almost 14 months, on which I upgraded to Windows 8, and now it doesn't start anymore. It tried to start in repair mode, but then it just shows a black screen, which doesn't change.

After running diagnostics I've gotten error info:

Error Code 2000-0142
Validation 63358
Msg: Hard Drive 0 - S/N WD-WX51A8109114, self test unsuccesful. Status = 7.

It says I should send it to Dell Technicians support.

Could anyone help?

Thanks in advance!

Best regards,

Philip