Help Needed.

My GPU will not turn on& neither will my other components. This is within the context of me rebuilding my PC with only my motherboard, RAM, GPU & CPU being retained.

My current PC specs Intel i2700pkf 24-core CPU Nvidia GeForce 4080 16GB MSI Edition Lian Li Edge 1200W Gold PSU Cooler Master PCI-E 4.0 GPU riser Crucial DDR5 4800MHz RAM (2 of them. MSI 760B Tomahawk Wifi DDR5

On my old build, everything was working fine.

My old build: My current PC specs Intel i2700pkf 24-core CPU Nvidia GeForce 4080 16GB MSI Edition Lian Li Edge 1200W Gold PSU Crucial DDR5 4800MHz RAM (2 of them. MSI 760B Tomahawk Wifi DDR5 Corsair 1200W RMx Gold.

To sum up only my CPU fan is turning on.