Ok i assembled my PC, so how to install Windows 7 Ultimate x64 DVD on it? Mouse/Keyboard connected to USB didnt work so I tried by using ps2 port for my mouse. Everything went smooth until i had to choose "My username" and "pc name" (tried to copy letters etc. but still got the same error message). I couldn't type with my keyboard cause it wasn't working on usb so i connected this time keyboard to ps2 port (i have only one ps2 port adapter). Even though keyboard's led lights was working i couldn't type in windows setup and move forward to desktop :/ Any solution for my problem?