Got new computer case in today installed motherboard and clipped hardrive dvd drive to it and power supply fan and all the other stuff but theres no power whatsover can some1 help
If it doesn't power up then usually it is a built in safety issue with the PSU to prevent it from supplying power because of a ground/short, etc. Remove everything from the case, especially your MB since that is where the problem could be, (support lug touching where is shouldn’t,) and connect the PSU back up and try it then.
By the way, that would be the first PSU that I've ever heard of without two things, one a On/Off rocker switch and also a red slider switch to change from 120/240 volts. What brand and model is it?