I have installed Ubuntu 14.04 version along side with windows 7. Ubuntu freezes randomly I am unable to use any keys on keyboard since they are not working even mouse is not working.the only solution to get off from this freeze is restarting my computer.I have ATi/AMD graphic card but I removed it before installing Ubuntu 14.04.I have run memory test no problem with ram.please give some solution to get rid of this abnormal freeze. thanks in advance.
CPU=Intel core 2 duo e7500 2.93ghz
hard disk=Seagate 500gb
I dual booted windows 7 and 12.04 LTS version.in 12.04 I am getting freezes frequently so reinstalled by formatting whole computer and installing windows 7 and Ubuntu 12.04 but still freezes are frequently occurring.then I formatted whole system again installed windows 7 and Ubuntu 14.04 still I am getting random freezes..I am using GCC compiler,vim editor and Firefox no other applications