Question PC restarts during boot sequence for no reason

[monexum]

For almost 2-3 months now everytime I turn my pc on it starts to boot up and I can see the option screen (F11 for boot menu, DEL for bios etc...).
But then it just restarts for no reason with no sound what so ever.
The second boot will forward me to windows' login screen but I still don't understand why it has to reboot once.

I did touch the BIOS once and some other techy things but there's no way that ,that might cause the issue.
Currently I'm guessing its because of the boot order (dual boot) but I'm not sure.

Windows 10 Pro 1809 64 tasty Bits
Mainboard: MSI B350 (AM4 Socket) PC Plus Mate
R5 1600 normal / stock / no OC

 

[Dark Lord of Tech]

PSU?

 

[monexum]

PSU?

Corsair CX550M (my old one was defective/misbehaved so I RMA'd it and received a new one [current one])

 

[Dark Lord of Tech]

What OS Dual boot?

 

[monexum]

What OS Dual boot?

Win10 (Main/default boot) | Fedora C28 Linux (Dualboot/optional) <- PC will boot into the default OS - since I'm using windows 80% of the time -, unless you press F11 and choose 2nd, 3rd... OS

 

[Dark Lord of Tech]

I know how they work , I run the Arch Based Manjaro KDE. Did this start after adding other operating systems.

 

[monexum]

I know how they work , I run the Arch Based Manjaro KDE. Did this start after adding other operating systems.

Honestly its hard to tell. I would say yes but there's a little twist.
this is my second fedora dual boot ,meaning I screwed something up with the first one and had to delete it via powershell etc.. long story short I reinstalled fedora a second time but the first dual boot configuration did not cause/showed the restarting issue.

 

[Dark Lord of Tech]

I bet something got out of whack in the boot record after the reinstall.