1) Sidebar windows 8 (black bar right)
2) Settings- Change pc settings
3) Press Power button and hold Left Shift and click restart.
4) Troubleshoot -> Advanced Options -> UEFI Firmware Settings -> Restart



5) In bios mode enter in Security "Secure Boot Control" DISALBED!
6) Enter in BOOT Tab "Launch CSM" and "Launch PXE" Enabled and "Fast Boot" DISABLED.
7) Boot options or Priority set to Slimtype DVD
8) If you have "Boot Mode" setting change to Legancy Bios
9) F10 SAVE and exit.
10) Instert DVD with Windows 7 and restart