Dear friends, really need your advice. I have a 2TB barracuda internal HDD which is experiencing clicking problems. It clicks for about 10 seconds after boot up and then stops clicking. There are no grinding sounds. HDD is undetectable in Bios and windows does not boot up. It happened 2 days ago when my computer hung and I did a dirty restart by switching off and then on. After being unable to access my bios, I restarted it a few times and the HDD started to click. I tried booting it up a few times to try my best to fix it after which I left it alone and stopped using it. After trawling the net for info, I am really worried about the platter scratching as I have very precious family memories inside. What are the chances of platter scratching and making any form of recovery? I am prepared to send it to a professional firm.. It was my fault for not backing up and I truly learnt my lesson this time around. If it helps, my HDD has about 300 GB empty. Around 3.5 years old - I did not drop the drive.