have you read the sticky's on the forum about tips and tricks for building a machine?
start with not working on a carpet, remove all components like they were still in their packaging, get the motherboard, processor, one memory stick and power supply and connect them. then connect the monitor and see if it will POST and get into BIOS.
if it will, turn it off, plug in the other memory stick and reboot the same into BIOS. if all is good then add the drive you want to install the OS on and if it's an SSD, set the controller to AHCI in BIOS
install the OS
then put all into the case and proceed to install all motherboard drivers including chipset and network
then download and install all windows updates
then install GPU if u have one and install latest drivers for it