acer aspire laptop suddenly stops working... windows won't open.. so i tried to format using win 7 bootable dvd and bootable usb too... but both wont work.... so i came to the conclusion that my hdd got broken somehow.. so i bought a hdd case to check for the error in hdd through another pc... when i did that chkdsk would say there is no problem in the hdd and i can copy files in that hdd tooo.. guys please help needed.. and yes the bootable usb and dvd is working fine in other computers....