Yeah, I had to take my motherboard out and put it back in too. Didn't see the cpu cooler coming
I was looking at the pictures and I said, "Someone else that made the same mistake I made the first time I built a PC."
I learned very quickly that the case is the last thing you should worry about.
Here's what I do.
1.) Mobo > Install CPU > H&S fan > Memory
Put it on the foam & antistatic bag the mobo came in.
TIP: Get yourself a set of these
FrozenCPU ATX Control Kit (0014) - FrozenCPU.com
Attach to connectors on motherboard. (See mobo manual)
Install Video Card - Plug in monitor & Connect Keyboard
Connect PSU to motherboard 20+4 & 4 or 8
Connect PSU to Videocard if needed.
Plug PSU into outlet. Turn on PSU.
Press power switch button from above kit and TEST the POST.
If it POSTS head to the BIOS and become familiar with it.
Doing the above will give you a better start to completing the build. With everything out of the case you can easily troubleshoot if a problem arises. Imagine not having to put the motherboard in and than take it out than put it back in again. It's way easier.
2.) Install Mobo > Install CPU > H&S fan > Memory into case & Connect front panel connectors.
3.) Install PSU and do some wire management.
4.) Install HDD/S
5.) Install Optical Drive/s
6.) Install Video Card and Sound Card
7.) More wire management
8.) TEST - POST - Get into BIOS
9.) Install OS
10.) Post pictures... lol