[SOLVED] When PC is turned on RED CPU light flashes on for a few milliseconds then shuts down entirely. Can't seem to fix. HALP!

[Rockmanxtrm]

I am using the following parts

AMD RYZEN 5 3600 6-Core 3.6 GHz (4.2 GHz Max Boost) Socket AM4 65W 100-100000031BOX Desktop Processor
https://www.newegg.com/amd-ryzen-5-... 5 3600-_-19-113-569-_-Product&quicklink=true

MSI B450 TOMAHAWK MAX AM4 AMD B450 SATA 6Gb/s ATX AMD Motherboard
https://www.newegg.com/msi-b450-tom...erboard-_-13-144-267-_-Product&quicklink=true

CORSAIR VS Series VS600 600W 80 PLUS Certified Non-Modular ATX Power Supply, CP-9020224-NA
https://www.newegg.com/corsair-vs-s...ply&cm_re=power_supply-_-17-139-266-_-Product

MSI GeForce GT 1030 DirectX 12 GT 1030 2GD4 LP OC 2GB 64-Bit DDR4 PCI Express 3.0 x16 (Uses x4) HDCP Ready Low Profile Video Card
https://www.newegg.com/msi-geforce-...rd ddr4-_-14-137-318-_-Product&quicklink=true

Lenovo ram ddr4 8GB desktop Gaming memory 2666MHz Interface Type 288pin 1.2V memoria rams ddr 4 for PC
https://www.newegg.com/lenovo-8gb-2...dr4&cm_re=RAM_ddr4-_-9SIATTBDDE3695-_-Product

When turning on pc cpu light flashes for a millisecond and everything shuts down, I double-checked the connection to the power supply and that the reset and on switch has been wired properly.

 

[Paperdoc]

Is this a brand new system you have just assembled? Or is this a system that was working before an now suddenly has a problem?

What you describe sounds a lot like there is a short circuit somewhere.

 

[Rockmanxtrm]

Is this a brand new system you have just assembled? Or is this a system that was working before an now suddenly has a problem?

What you describe sounds a lot like there is a short circuit somewhere.

This is a new system that was just assembled.

 

[Paperdoc]

One of the common causes of short circuits in a brand new assembly is that one or more case stand-offs is in the wrong position, OR that none ever were used at all. See my post of Dec 12/20 in this thread

https://forums.tomshardware.com/thr...sult-in-a-lose-of-data.3670519/#post-22107308

It was written for someone who planned to move his system to a new case, but it applies to your situation as you mounted everything in a new case. If you have any reason to suspect the stand-off location is involved, I suggest you unscrew all the screws (often nine) that hold the mobo in the case, and remove it carefully. Then study closely whether every one of the stand-offs is exactly where a mobo mounting hole is.