[ubuntu] HP 530 laptop turns itself off

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http://ubuntuforums.org – I have an HP 530 laptop dual-booting Karmic and XP. This is the series of events that lead to the current state of affairs: 1. Mouse Pad began troubleshooting and acting randomly both in Windows and Ubuntu. 2. As a result, I unplugged the ribbon tape connecting the mousepad to the motherboard and am currently using a USB mouse. 3. Humming sounds can be heard from my laptop during use + while running Ubuntu/windows, the computer randomly shuts off. 4. While using Ubuntu, I run an applet in my AWN dock and realize that the laptop's temperature (Hardware)