Hi, I am having a Toshiba laptop less than two months old. It has got 500Gb hard disk,4Gb RAM and windows 7 64 bit operating system. When I purchased the laptop I was told that it will give 10 hours of battery backup. But it hardly gives five hours of battery backup when fully charged. When the battery charge reaches 10% the BIOS makes a continuous beep sound. I cannot find any option to turn off the sound. Laptop is only few months old but the Toshiba PC Health Monitor is showing battery health as “fair”. The cooling fan speed is always maximum and the Cpu temperature always remain 35%-40% of Max. Please help me.