What Laptop/Notebook/Ultrabook should I pick up?

Mike BD

Estimable
May 3, 2015
49
0
4,590
Hello and best regards,Tom's Hardware.
I'm very confused in choosing a Laptop.
I'll use it for gaming and internet surfing.
Somehow,I'm stuck between AMD&Intel,AMD&NVIDIA,Dell vs. Lenovo,HD displays vs. Full HD displays and so on.
All I can say is that I want a complete package with the most as possible from this specifications list:
-HD/Full HD display
-Replaceable CPU/GPU/RAM/HDD/CD-ROM/Sound/Motherboard
-Integrated&Dedicated GPU

That's all.
Thanks in advance.
I do apology for my english.
 

Mike BD

Estimable
May 3, 2015
49
0
4,590
Budget:400-450 EUR/450-500 USD.
Games:Almost every game,it isn't such a helpful refference.
I rather want something to be reliable and easy to be repaired [as much as possible in this budget] and mid-gaming device.