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#11
Do you have any Win 7 installation disk ?
Can you give us more information about your hardware specs?
If it works now with the BIOS setting change then perhaps that's what the issue was.
What was the BIOS change you made?
You can get a PS/2 mouse on eBay or at a second hand store if they have 'em. Once you do, you'll need to burn the USB and/or chipset drivers to the CD and install from there. Obviously can't use a USB stick.
You can get a replacement installation media for free at https://www.microsoft.com/en-gb/software-download (you still need a product key)
What is the model of your Asus MoBo? Z97, Z170, Z270...?