Only some parts are upgradable. The memory usually will be, and the processor can be upgraded but will take an experienced technician.
If you have a built in battery, then you can upgrade it.
I was trying to upgrade my laptop today
Memory is far and away the most efficient upgrade for any laptop.
Laptop graphics cards are generally considered to be impossible to upgrade.
can i upgrade my buffer on a toshiba laptop running win 8.1
No.
Upgrade your laptop to have an SSD instead of an HDD
Laptop are best. because they are portable and can be upgrade.
It depends on the type of laptop you have. It is possible to upgrade the memory on most notebooks. It's also possible to add external memory.
yes
Yes, it is possible.
Before attempting to purchase any extra components, one should try to take the laptop apart. To improve the performance of an old laptop, one should upgrade the RAM, the Hard Drive, as well as the operating system.