windows boot manager

acer321

Reputable
May 18, 2014
1
0
4,510
I got this new acer desktop which already had windows 8 installed and i want to dual boot it with windows 7 on the other disk partition.even if I restart the computer with win7 installation disk already inside and click F12(boot menu) it still only shows the 1 option which is "windows boot manager" I've tried going to pc settings and changing the UEFI settings but all it does is restart the computer to the bios settings.I also tried disabling the "secure boot" and i've tried changing the priority to optical drive as the first and hard drive as the second but still. I've run out of options now. I don't know what to do next. If anyone can help me with this problem I'd really appreciate it. I'm getting frustrated because I'm stranded now.