My question is whether I can simply swap the RAM of a PC or laptop if it only has one RAM bar and I take out the original completely or whether you have to do something special when booting up?
Can you just swap, yes!
The RAM must be compatible with your hardware. You have to do some research to find out what works and what doesn't.
If you have a slot occupied and one is still free, you can double the RAM by buying the exact same one again and adding it.
Of course the laptop should be off 😊
And then it starts up again normally without you having to do anything?
No, not when booting you would have to press Windows key and R and then enter the Msconfig further I don't know take a look at YouTube there it is explained to you so you tell the main board that more GB is now installed and that the mb now also more can use
Yes, you just have to make sure that you choose the right "size"!
PC or laptop?
Everything can be done. Just have to pay attention to the compatibility. It is also possible that the RAM is soldered in the notebook. Then you can't exchange it.
What is it now?
You have to make sure that it is the same
It can also be firm then you'd better leave it
Windows