PC won't post

[dandelion29]

Hello! 

 

I built my pc today, it posted fine, then restarted it and enabled XMP profile for the ram. Played Cyberpunk 2077 for like 5 hours straight and then the computer randomly restarted. I went back into cyberpunk and monitored the temp, the gpu reached max 77 but stayed on average on around 74,the cpu was in the 60-66 degrees area.

 

And then it restarted again, randomly, after booting I noticed the cpu fain spinning not as fast as usually, i turned off the computer to disable xmp as I suspected it to be on fault for the random restart, however after I turned it off the PC simply wouldn't post.  The cpu fan doesn't spin and no image on the monitor, however everything else powers up like the gpu, cooling fans, and leds on the mobo. 

 

I tried to take out the cmos battery for 15 mins, put a screwdriver on the cmos jumper pins, and then putting the battery back in. (psu was off and cable disconnected) this didn't fix the issue. 

 

Then I took out the ram, one by one, tried to have it post but nothing happened. I also checked the cables that go into the MOBO, they seem to be connected fine, the cpu fan cable was warm but I assume it's because it was recently used and it's at the side of the cooler and on top of the heatsink. 

 

Specs:

CPU: Ryzen 5 3500X 3.6GHz 

RAM: Corsair Vengeance LPX Black 16GB DDR4 3200MHz CL16 Dual Channel (inserted in a2 and b2) 

MOBO: Gigabyte B450 Aorus Elite 

GPU: Asus GeForce GTX 1660 Super Dual fan

PSU: SilentiumPC L2, 80+ Gold, 550W

 

Any ideas what else I could try to have it post? The components are brand new and worked perfectly for hours, I still blame the XMP but can't post it to revert the settings. What can I try to do? 

 

Edit: There is a red led turned on and it says cpu underneath ( on the MOBO) 

[Guest]

What bothers me about it is the Cpu fan doesn't spin. That has my finger pointed at the motherboard taking a dump on you. 

 

Since you've already done the standard procedures one would suggest, You could plug in a motherboard speaker for beep codes. These will indicate an error if the board is functional and not posting. If the board does not give a beep of any kind (One short is normal operation then it posts..) Then RMA the motherboard.

 

 

[dandelion29]

11 minutes ago, ShrimpBrime said:

What bothers me about it is the Cpu fan doesn't spin. That has my finger pointed at the motherboard taking a dump on you. 

 

Since you've already done the standard procedures one would suggest, You could plug in a motherboard speaker for beep codes. These will indicate an error if the board is functional and not posting. If the board does not give a beep of any kind (One short is normal operation then it posts..) Then RMA the motherboard.

 

 

Hi! 

 

Thanks for the tip, however I managed to fix the issue by switching ram slots, so it was the xmp I think, weird, all my parts should support 3200MHz. Have a great day!