I suggest using USB flash drive, it's much faster to install and you don't have to burn DVD's. Use Windows 7 USB tool.
1. Create folders C:\W8 and D:\Mount. Copy contents of your Windows 8 disc or ISO into C:\W8.
2. Run Command Prompt as Administrator "WIN+X".
3. Paste these commands one at a time and wait for the tasks to finish
Dism /Export-Image /SourceImageFile:C:\W8\sources\install.wim /SourceIndex:1 /DestinationImageFile:C:\install.wim /Compress:Maximum
Dism /Mount-Wim /WimFile:C:\install.wim /Index:1 /MountDir:C:\Mount
Dism /Image:C:\Mount /Get-TargetEditions
Dism /Image:C:\Mount /Set-Edition:ProfessionalWMC
Dism /Unmount-Wim /MountDir:C:\Mount /Commit
Dism /Export-Image /SourceImageFile:C:\install.wim /SourceIndex:1 /DestinationImageFile:C:\W8\sources\install.wim /DestinationName:"Windows 8 Pro with Media Center" /Compress:Maximum
Windows 8 Pro with Media Center is now in C:\W8. You can delete temporary install.wim and mount directory.