Welcome to the forums, newcomer!
We're going to need a little more information from your end. When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list them like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
You could also upload a video of the scenario you're encountering to help add some more meat to the potatoes, so to speak. you can upload said video to a site like Imgur or their ilk and then parse the link onto this thread.
How old is the PSU in your build? Have you tried powering the system off of another wall outlet?