I have this computer that a customer brought to me that she complained that the Laptop was running and wanted me to wipe the hard drive clean and re-install the O.S. So I backed up all her information, wiped the drive clean, and then proceeded to install the OS. (Windows XP home ed.) The windows files copied fine but when the laptop attempted to restart it says that "A disk read error accured." So I ran a test on the hard drive with Western Digital testing software on another computer and it says that the disk is fine.
I then wrote all zeros to the disk, formated it, and attempted to install the OS again. Again I got the same results as the first time. Now, my question is: Could the hard drive still be bad even though the test results show good? This disk (Western Digital) is still under warranty, but I do not want to send it off to the company and claim a bad disk if it is indeed good.