Question First build. PC wont turn on. high pitch squeak/squeal coming from PSU

[Austin_410berry]

This is my first build and i go to turn it on and the PSU makes a high pitch squeal. i figured it was a dud so i returned it and got another one. well it is doing the same thing. My PSU is a corsair hx750i

 

[PC Tailor]

Welcome to the forums my friend!

Would you be able to upload a video to allow us to hear the issue?
What is the rest of your system spec?
Are you using a UPS at all?

You may want to go over every step in this guide to ensure nothing key was missed: https://forums.tomshardware.com/thr...ng-about-post-boot-no-video-problems.1285536/

When you say you returned it, did they swap it for you or do you know you got an entirely new PSU?