How can I upgrade a laptop CPU?

I was given a laptop unfortunately it is a bit older and therefore I would like to upgrade it so I do not have to pay 400 euro and buy me a new one. Now the question arises, where do I get an AMD at least quad-core processor for my laptop? And second he is a bit hard on the card with VGA and LAN connection, I'm not quite in order to get it completely on is it bad if I just crack it from the front or go broke it finally is the motherboard yes there? And if you can put a normal processor in a laptop, I've heard that these processors are custom made.

First, laptops have their own processors, second, the socket is usually not "pluggable", but soldered. Since you can't just replace the CPU.

What you mean with the other question with VGA and LAN, I do not understand…

What is always advertised when you get a desktop PC? Right! You can equip it. The only thing you could possibly do would be to add more RAM, if they were not soldered or hard drive replaced. You can't do more with a laptop either.

Processors are usually made especially for the laptop (mostly u-processors), which consume less power and get less hot, so even a lousy fan can cool it. And quite simply you can't say jo Bock on Intel or AMD processor, this would have to fit especially on the motherboard and the thing must then be synonymous with power supplied, which will not pack the supplied power supply.

Abstract: No, it is not possible

Upgrading with hardware is neither necessary nor possible. Here I would install a free and performant Mint XFCE for free from linuxmint.com in addition to the lame and clumsy Windows. There are no pests, the equipment with programs is much better than the most expensive Win and every beginner gets along fine with it. A performance-consuming virus scanner is not needed for the modern Mint, so only insecure, immature operating systems need.