Steps

1. Time
2. Plan a half afternoon to do things properly and cleanly (cable management), even an entire one if your have a large configuration
3. Install RAM, CPU and Ventirad (or Watercooling)
4. > CPU
5. Check the location of the small triangle in a corner that serves as a key on the CPU and CM
6. > RAM
7. Check location of notch on RAM and CM
8. Depending on the CM, check on which slots you should use for the case of a single barette (even if it is not recommended with respect to the dual channel) or the slots for the two barettes (dual channel)
9. /!\ Test to start to check that there are no hardware problems (so temporarily connect the PSU, the GPU and a screen on the CM)!
10. Put the PSU and the CM (with the IO Shield and the support screws) in the Tower
11. /!\ If your PSU is modular (or semi-modular), remember to check that you have put the necessary cables!
12. Install the additional fan(s)
13. Install HDD (s), SSD (s), DVD Drives, etc
14. Connect the PSU to all components (without forgetting the Tower connectors)
15. - This is done in two simultaneous steps:
16. Everything must be specified on the motherboard manual
17. Manage your cables
18. Install the GPU
19. /!\ Try to start to check that there are no hardware problems (so temporarily connect a screen to the GPU)!
20. Install your OS

Glossary

1. CPU : Processor
2. RAM : Random Access Memory
3. Ventirad : Aircooling
4. AIO : All in one
5. Watercooling custom : AIO handmade
6. PSU : Power supply unit
7. GPU : Graphic card
8. Tour : Case
9. HHD : Hard disk
10. SSD : Hard disk with Flash memory
11. OS : Système d'exploitation (c.f.: Windows)
12. Bottleneck : Bottleneck
13. OC : Overclock
14. CL : Latency
15. ROM : Mémoire morte de la carte mère
16. Single-core : Single-core
17. Multi-core : Multi-core
18. Airflow : Airflow