I downloaded the Windows 10 ISO file, and I followed the steps in the tutorial here for dual booting with Windows 7,
and I tried both options: dual boot using DVD, and dual boot through Windows 7 itself.
When I try option 1 (using DVD): After I burned the DVD, I went to BIOS (not UEFI) to start the laptop from the DVD drive, and it did, but I get a message "Cant find bootmgr" and then it proceed to start Windows 7 instead.
Then I tried option 2: I downloaded the ISO to the laptop, then mounted it using daemon tools, then, when I go inside the mounted drive, I mark all files and use 7-zip to extract to a desktop folder, but 7-zip asks if I want to replace some files with the same name (although one file is named something very long for example sdfojsfsf.text and it wants to replace it with a blank file named ".text"), also, 7-zip write some errors about certain damaged files including BOOTMGR and some more. after extraction is completed all I get is a list of files without names, only with extension names.
If I try to press the "setup.exe" directly from the mounted drive, I get a security warning "These files can't be opened. Your Internet security settings prevented one or more files from being opened"
What is the problem ?