Question Computer turns on and off twice before turning on normally

[Debashish D]

My computer turns on then off then on again then after which its starts and runs automatically. I tried re installing RAM, GPU and even reset bios but still no luck. I have uploaded a video on YouTube which shows what exactly happens.

System Specs:
-----------------------------------

• i5 8400
• Motherboard Gigabyte B360M
• PSU Corsair VS550
• RAM 8GB corsair vengance ddr4 2400
• RX 580 GB MSI gaming x
• 1 TB WD Blue
• Kingston A400 128GB SSD

Link to video ->

View: https://www.youtube.com/watch?v=UyFGZnbJRYc

 

[rgd1101]

full system spec? include make and model of the psu

 

[Debashish D]

full system spec? include make and model of the psu

System Specs are as below
-----------------------------------

• i5 8400
• Motherboard Gigabyte B360M
• PSU Corsair VS550
• RAM 8GB corsair vengance ddr4 2400
• RX 580 GB MSI gaming x
• 1 TB WD Blue
• Kingston A400 128GB SSD