[ubuntu] Hard Drive Assessment and hdd occassion freeze

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http://ubuntuforums.org – Not ubuntu specific, but here anyway to get help. problem: a) The hard drive indicator stop blinking or completely goes dead and computer freezes. At this point I have to do HARD REBOOT, as keyboard/mouse do not respond. neither do the special commands, ctrl-alt-(function keys) f7/f1/f3/f12 respond. b) When I do hard reboot, there is no guarantee the computer will boot again. Usually when this happens I've noticed that hard drive light never comes up on boot. At that point I usually wait for 10 mins or more and pray and forsure it boots later, but may freeze again. tried and co (Hardware)