I have a IBM ThinkPad A20m laptop. The system spec is Intel Celeron processor and 40 GB of hard drive. I want to upgrade my laptop now. I need the entire technical details on the laptop and limit to which it can be upgraded. I do not have any manual and other reference guide for the laptop. So what are the suggestion for upgrading this laptop. Which processor, ram size and hard drive I can add up more to increase the performance of this machine.
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