motherboard safety with turning on my pc?

[Kaspersome]

So my case is coming in about 10 days, and im kinda yearning to start up my computer and test for parts etc. So how bad would it be if i just plugged everything in and turned it on now? If its not bad is there any precautions i should take? And im not gonna game on it or anything, i just wanna install my OS and make sure everything is good.

 

 

 

edit: this is my build 

PCPartPicker Part List

Type	Item	Price
CPU	AMD Ryzen 5 2600 3.4 GHz 6-Core Processor	$119.99 @ B&H
Motherboard	ASRock B450M PRO4 Micro ATX AM4 Motherboard	$78.98 @ Newegg
Memory	G.Skill Ripjaws V Series 16 GB (2 x 8 GB) DDR4-3200 Memory	$69.98 @ Amazon
Storage	TCSunBow X3 120 GB 2.5" Solid State Drive	$18.98 @ Amazon
Video Card	Gigabyte GeForce GTX 1070 Ti 8 GB Video Card	$400.00
Case	NZXT H500 ATX Mid Tower Case
Power Supply	Corsair CX (2017) 450 W 80+ Bronze Certified ATX Power Supply	$53.98 @ Newegg
Monitor	LG 24MK400H-B 24.0" 1920x1080 75 Hz Monitor	$99.99 @ Walmart
	Prices include shipping, taxes, rebates, and discounts
	Total	$841.90
	Generated by PCPartPicker 2020-01-04 16:46 EST-0500

 

[muito_gostoso]

use the box of paper of your motherboard, i was running my pc with a case of paper, i had no issue wath so over.

 

 

[saladcrack]

You can totally setup everything without a case for testing purposes. Just use the motherboard box as a little stand for the mobo, plug everything in and go for it. Loads of people do this before building their PC in the case so they don't have to remove everything if something comes doa.

[Kaspersome]

6 minutes ago, muito_gostoso said:

use the box of paper of your motherboard, i was running my pc with a case of paper, i had no issue wath so over.

 

 

lmao that looks insane. but for some reason i like the look