According to CPU World: http://www.cpu-world.com/CPUs/Bobcat/AMD-E%20Series%20E-300.html . You laptop Processor is soldered to the motherboard thus you are unable to upgrade.
Even if you send your laptop to a Computer shop to have the processor upgraded, it probably will cost more than a new laptop with a better processor.
Besides to upgrade the Processor you will need the correct BIOS version installed to support the new processor plus your laptop motherboard CPU List must indicate that it will support any new upgrades.