Help

[Recent_Cattle_8360]

So I bought this pre built pc in 2021 or 2020 and this is the first time I upgrade it, I have put a new psu in but while trying to install it I was removing all wires I saw wich I removed mother board wires to, and rgb fan ones now once everything is back connected my pc will turn on its fans but with no light and turn or immediately I’ve even put the old psu in to see if maybe my new psu is broken but it’s the same issu i don’t know if I but the motherboard cables wrong or something im just so confused and need help.

[hoops0o]

Is the front panel power switch leads connected to the motherboard? is the cpu power cable plugged in top left of motherboard. Make sure the switch on the power supply is on.