How would I go about doing a out of case boot test?

Solution
install CPU and CPU cooler * plug in CPU cooler pwer cable to mobo.
To mobo plug 24pin and 8pin cables from PSU * Open mobo manual and read it 😉
To GPU plug in PCIE power cables from PSU
Insert rams stick to slots
Plug in keyboard * you need this to check everything in BIOS
Conect monitor to GPU.
Put PSU on side turn on.

Press red button * (and start nuclear war 😉
install CPU and CPU cooler * plug in CPU cooler pwer cable to mobo.
To mobo plug 24pin and 8pin cables from PSU * Open mobo manual and read it 😉
To GPU plug in PCIE power cables from PSU
Insert rams stick to slots
Plug in keyboard * you need this to check everything in BIOS
Conect monitor to GPU.
Put PSU on side turn on.

Press red button * (and start nuclear war 😉
 
Solution