create bootable iso from oem windows 7 (recovery media disc) folder

I need to create a bootable iso from windows 7 recovery media discs contents that I copied from discs before they went unusable. So my problem is that in two different folder lies my original windows(part1 and part2 in separate folders) that came with my Dell Studio laptop. Now I needed my that original windows so I tried multiple methods to install that original windows on my laptop from those folder those are-

1. used various softwares to convert those two folders into two isos .I could make isos but they are not bootable(I have made bootable iso`s for other os same way so there is not problem in my method). All the softwares fail to make it bootable.

2.Tried to make usb stick bootable by using cmd method and copying discs contents but again it does not boot to os.

3. tried to install through lan but again it does not boots to os to install. So in all the methods laptop is not recognising it as bootable but I have copied all the contents from those two recovery discs in those two folders what is missing that it is not booting into os ? Folder contents screenshot are- Folder1(contains disc1 contents) enter image description here Folder1(contains disc1 contents) enter image description here