Did I do something wrong?

Mar 19, 2018
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So I basically tried to make a gaming pc, first one. And I encountered a big problem. I thought I had everything set up and connected (with the disappointment that my Gigabyte Z370 Ultra Gaming didn’t support RGB) but when I went to turn it on for a final test, the motherboard flickered a little of the led it has and just did nothing at all. I pressed the power button then the fans came on and a red light came on on the motherboard. But it continuously turned off and on by itself within the span of like 10 seconds each one. I’m confused really. Did I hook something up wrong or is something bad?
Specs
AORUS Ultra Gaming mobo
Coolermaster 5 lite RGB case
Intel i3 8100 core processor and fan
EVGA 500W power supply
No ram installed yet
MSI HD 6450 “Graphics card”
 
Solution
The PC won't boot properly even to the BIOS unless you have RAM installed.
When performing a test boot just to make sure that you can make it to the BIOS at which you have confirmation that everything is working properly you need to have at least the following installed properly:
The motherboard
The CPU properly seated in the socket and the cooler with thermal paste applied and the fan header plugged into the board
RAM properly seated into the appropriate RAM slot on the board
Power supply cables properly and firmly connected to their respective places on the motherboard.
Front panel PC case stuff plugged in to their respective places with the power button being plugged in at the least to be able to turn on the PC.

Everything else is...

QwerkyPengwen

Splendid
Ambassador
The PC won't boot properly even to the BIOS unless you have RAM installed.
When performing a test boot just to make sure that you can make it to the BIOS at which you have confirmation that everything is working properly you need to have at least the following installed properly:
The motherboard
The CPU properly seated in the socket and the cooler with thermal paste applied and the fan header plugged into the board
RAM properly seated into the appropriate RAM slot on the board
Power supply cables properly and firmly connected to their respective places on the motherboard.
Front panel PC case stuff plugged in to their respective places with the power button being plugged in at the least to be able to turn on the PC.

Everything else is extra such as an HDD for an OS and a GPU for gaming or in the case of having a CPU that doesn't have integrated graphics.

All other stuff such as case fans, led light and whatnot are all extras that are not important for a PC to boot up properly.
 
Solution