Help! My PC Won't Boot!

[Electro_XD]

Hi, 
A few weeks ago, I've built a pc. 
I've tried to overclock the CPU, didn't work, set back to clock speed, worked. 
Everything worked fine until now. 
My PC was running perfectly fine, but it suddenly shut down and didn't boot up anymore.
Well, its more like turning on the computer, worked for a few seconds, goes into windows, then shut down by itself. However, when I tried to turn it on again, it didn't go in to windows at all, tried to go into bios but it didn't work.

What should I do to fix this issue? 
Also, the fans were running perfectly fine when I try to boot up my PC. 

Specs: 
CPU: i5 6600k
Mobo: Maximus Hero Viii
Cooler: Corsair H100i v2
Ram: Vengance 16GB Ram
PSU: RM850i
GPU: I don't have one yet

Thanks 

Update: 
When I switch my PSU on, the lights on my mobo turns on, however, when i press the start button on the mobo, none of the fans turn on, neither does the light on my cooler.

[KearneyMC]

1 hour ago, Electro_XD said:

Hi, 
A few weeks ago, I've built a pc. 
I've tried to overclock the CPU, didn't work, set back to clock speed, worked. 
Everything worked fine until now. 
My PC was running perfectly fine, but it suddenly shut down and didn't boot up anymore.
Well, its more like turning on the computer, worked for a few seconds, goes into windows, then shut down by itself. However, when I tried to turn it on again, it didn't go in to windows at all, tried to go into bios but it didn't work.

What should I do to fix this issue? 
Also, the fans were running perfectly fine when I try to boot up my PC. 

Specs: 
CPU: i5 6600k
Mobo: Maximus Hero Viii
Cooler: Corsair H100i v2
Ram: Vengance 16GB Ram
PSU: RM850i
GPU: I don't have one yet

Thanks 

Update: 
When I switch my PSU on, the lights on my mobo turns on, however, when i press the start button on the mobo, none of the fans turn on, neither does the light on my cooler.

Check if all the cables are plugged in correctly

[Electro_XD]

1 minute ago, KearneyMC said:

Check if all the cables are plugged in correctly

Yes, they are. 

[21rkosta]

wait im confused, is it posting?

[BbsMentos]

Try to press the clear CMOS button

[Electro_XD]

3 minutes ago, 21rkosta said:

wait im confused, is it posting?

Yes, after pressing the CMOS button.

5 minutes ago, BbsMentos said:

Try to press the clear CMOS button

Thank you, my system is now able to go into bios. However, I am currently in windows recovery mode, what should I press next? See advanced repair options or should I just restart my PC?

 

[KearneyMC]

1 hour ago, Electro_XD said:

Yes, after pressing the CMOS button.

Thank you, my system is now able to go into bios. However, I am currently in windows recovery mode, what should I press next? See advanced repair options or should I just restart my PC?

 

Try to restart

[JefferyD90]

22 minutes ago, Electro_XD said:

Hi, 
A few weeks ago, I've built a pc. 
I've tried to overclock the CPU, didn't work, set back to clock speed, worked. 
Everything worked fine until now. 
My PC was running perfectly fine, but it suddenly shut down and didn't boot up anymore.
Well, its more like turning on the computer, worked for a few seconds, goes into windows, then shut down by itself. However, when I tried to turn it on again, it didn't go in to windows at all, tried to go into bios but it didn't work.

What should I do to fix this issue? 
Also, the fans were running perfectly fine when I try to boot up my PC. 

Specs: 
CPU: i5 6600k
Mobo: Maximus Hero Viii
Cooler: Corsair H100i v2
Ram: Vengance 16GB Ram
PSU: RM850i
GPU: I don't have one yet

Thanks 

Update: 
When I switch my PSU on, the lights on my mobo turns on, however, when i press the start button on the mobo, none of the fans turn on, neither does the light on my cooler.

Reset CMOS