This is a simple and minimalistic PC build I built.
What you ned: Drive Mount Powerbutton Mount 2x Spacer ATXMount-DriveMount 26mm Spacer PCIPort-DriveMount 9mm mATX mount Top mATX mount Bottom PS Mount PS Mount Mainboard support 2x PS Mount PS-HDD Spacer
12x M3 Nuts and Screws in various lenghts (the longest is about 20mm) 4x HDD Mounting Screws 2x Powersupply Mounting Screws Superglue Tactile Switch as powerbutton
Tools: Dremel or Hacksaw to cut the Screws in the right lenght Soldering Iron
How to build:
The 2 mATX mounts where clicked together
PS Mount Mainboard support is mounted on the mainboard on the left under the varioud Ports (USB,...) with the Screw which also hold the mATX mount in place
On top of the mATX mount is screwd from top to bottom: PS Mount PS Mount PS-HDD Spacer Drive Mount Spacer ATXMount-DriveMount 26mm mATX mount Bottom
The spacer "Spacer PCIPort-DriveMount 9mm" is glued in the middle of the 4 mounting Screws for the HDD-Drive on the "Drive Mount" in order to fill the gap between the "Drive Mount" and the PCI Ports on the Mainboard
Press fit the Tactile on its Mounting Part and screw it on of of the mounting Screws on the mainboard. Next you have to solder 2 wired to the coresponding pins on the tactile switch and the mainboard in order to turn on the computer.