Ok, I put in the dvd and restarted the computer. I installed linux to a second hard drive.
Linux worked fine.
When starting windows 7, windows refused to start and popped up the part that makes me reformat and reinstall windows without any other choices.
Windows worked but after that Linux didn't and couldn't boot.
I am using a brand new asus laptop with i5 cpu. I have no idea what motherboard or other hardware descriptions it has.
The only way I get to use Linux is to remove the windows drive, plug in an external drive, install linux to that drive, shut down the computer and reinstall the windows drive, unplug the external drive and boot windows.
If I want to use linux I have to have the computer off, plug in the external drive, boot the computer, select the external drive to boot from. If i make a mistake and forget to unplug the drive while windows is booting, windows will force a reformat and reinstall every time.
The only version of linux I can leave attached is puppy linux because it seems it doesn't set a boot flag or use a non-windows partition.
I even tried making a permanent linux swapfile partition so I could use a dvd or flash drive with faster performance. Windows refused to start until I reformatted and reinstalled windows or removed the 'unauthorized' partition. It seems that windows wants only windows on the computer.
I hate UEFI...
I won't touch the windows drive at all, for warranty reasons.