Question PC not getting past post after installing a new liquid cooler

[Christellestu]

I just built my PC, I started it and it all worked fine played games on it and it ran well, I decided to get a liquid cooler, and also got a 8 slot 4 pin splitter so I could have 3 corsair rgb fans going. After installing these 2 things I started the pc for the first time and smoke starting coming out of one of the fans, the rgb wire had completely melted. I removed the fan and the splitter. Turned it on again and now have red debug light on mobo, its the cpu one that's on. I have no signal going to monitor, mouse or keyboard.
The cpu fan is definitely plugged in.

I have tried almost everything I have read online about this issue.

• take ram sticks out put them in different slots
• unplug psu hold power button for 30 seconds
• take cmos out
• tried a different psu

I am about to buy a new CPU and if that doesn't work, a new MOBO. I can't work out what's wrong with it and it's driving me mad

Parts

• Cooler Master MWE Gold Fully Modular 550W Power Supply
• Intel Core i5 9400F Processor
• Gigabyte Z390-UD Motherboard
• ASUS GeForce GTX 1660 TUF Gaming X3 OC 6GB
• Corsair Hydro H115i RGB Platinum 280mm AIO Liquid CPU Cooler

 

[Christellestu]

Forgot to mention that the pc starts up everything is working but fans on GPU and running at full speed. I have also tried turning on without the GPU but same black screen on monitor.

 

[clementttttttt]

Pretty sure the cpu is fried.

 

[Christellestu]

Pretty sure the cpu is fried.

Do you think its from the wire on the fan melting?

 

[Christellestu]

Do you think its from the wire on the fan melting?

And is it possible that the MOBO is fried? I don't mind buying a new CPU if I know that's the problem

 

[Savagee]

Hi, did you managed to fix it ?