Question PC turns on by itself

Feb 10, 2021

if anyone could help, I would greatly appreciate it. I recently bought a OMEN 25L GT12-0060 Desktop Computer.

I decided to change the preinstalled CPU fan to a Noctua NH-U12S. I installed it and now my pc is instantly turning on whenever I plug it to power and after 15seconds the led ligths inside the computer flicker a second and turn on again. Seems like is about to turn off but it doesn’t.

The monitor doesn’t receive the signal but the computer is on, then when I decide to turn it off after 10seconds turns on again.

I decided to put the original cpu fan and the same problem happens.

Any ideas as of why this might me happening and something I could do to fix it? Thank you in advance!

- 2.9 GHz Intel Core i7-10700F Eight-Core processor

- 16GB of 2666 MHz DDR4 HyperX RAM
(The current memory configuration is one 16GB module with an additional three slots. Making for a total of four 288-pin DIMM slots. supports 64GB of RAM, or 16GB per slot.)

-NVIDIA GeForce RTX 2060 graphics card has 6GB of GDDR6

-512GB NVMe PCIe M.2 SSD and a 1TB 7200rpm SATA hard drive.