Need help about vaio!

ok this what happen if i open it the bios run and the next screen only show “_” on the upper left corner and just stuck there!!
when i try to repair it using the windows cd
windows files loading then it just stuck there again
do you know wat’s the problem cause i think it’s the HD but i’m not sure though
can anyone help me???
sorry for the bad english!!
Answer #1
Try testing your HD for bad sectors…Hiren’s BootCD > HDD Regenerator…
Answer #2
Bad HD.