Can I upgrade my RAM if it's soldered?

It depends on whether your laptop has an open memory slot. Some laptops solder half the RAM and leave a slot free, so you can add more. But if every byte is soldered—common in thin-and-lights, MacBooks, and ultrabooks—you’re out of luck. Check your model’s specs or pop the bottom panel; if there’s no slot, your only option is to live with it or replace the laptop.