Sometime its normal that laptop repairing at home is possible by just opening and re-inserting of laptop parts. Example like memory or hard disk.
Screwdriver tool kit
External DVD WR/RW
Pry Opening Tool Kit
Use laptop screwdriver tool kit to open the laptop body part. After opening the body spot the memory module and remove RAM/memory and re-insert back to module.
External DVD WR/RW or Pendrive can be used to boot the system to repairing mode. Windows boot error are fixed in repairing mode.
Pry Opening Tool Kit are used to open the laptop screen and used for safely opening the laptop screen. But we never recommend of opening the screen.
Many time repairing of laptop at home is successful but it is always a good idea to get it repaired from experts.