[ubuntu] Laptop Heats Up quickly

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http://ubuntuforums.org – Hi, I bought a lenovo p500, corei5-3210M, 6GB Ram, Intel HD4000 graphics with pre-installed windows8. I installed Ubuntu 12.10. But, laptop starts beeping every 30 sec, just minutes after booting into ubuntu. every beep is accompanied by hard disk spin sound. At times, it chirps as well. I can feel hot air coming out of vents. This doesnt happen at all while using windows. I tried reinstalling ubuntu, adjust power settings using jupiter, reinstalling graphics drivers. but problem persists. Please help me with this as I have to execute a lot of codes in terminal. Thanks in advance, wildEngg (Hardware)