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Most newer lap top computers generate a lot of heat. The designers of the machine walk a narrow line between efficiency and customer satisfaction. The heat comes from the processor and the power supply of the screen. Designers incorporate a standard called heat pipe design into cooling the CPU along with a small fan sometimes. The heat pipe design is a static (no electricity used) means of wicking away the heat from the processor. When the temperature goes higher than the heat pipe can act, a small fan cuts in to reduce the temperature, but at a cost of using electricity from your batteries. The heat of the lap tops have caused people to seek medical help for excessive reddened legs, thus generating a medical syndrome called "Lap top Syndrome"
The batteries are LI-ion (Lithium Ion) construction and have to be re-charged with extreme care as excessive heat generated by charging can case the lithium to burn and cause a fire. Battery designers have placed a small smart chip in the battery pack to monitor the voltage levels and this chip will shut the battery down if too much heat is detected. Since the batteries are of Li-ion design, they start
Go to Toshiba's website and download a driver for the sound card, if this does not help you need to uninstall everydriver for the soundcard that is showing in the Device Managerand try to load an older version of driver. Sometimes an update ran by Windows might have caused this. There is nothing to worry unless your motherboard sound chip is gone.
Probably a chipset issue, try getting DriverCure or DriverDetective if your internet works at all, or you could simply reformat the hard drive with a new operating system. Leave more info on the comments and I'll try to help you out
appropriete driver may not be installed. use your motherboard cd to installm them. if you do not have it try to find somone else who has the same model as your and if they do not work again go and ask for a Foxcom motherboard cd from a computer specialist. it is suitable for most motherboards and it will install all the necessary drivers for sound, vga, adapters and so on and so forth.