Haki__ :
I upgrade from win 8 to win 10,i dont save files (im dumb),after some months i want to download win 7,i download iso and create bootable device,but after i finish i run setup.exe for win 7 and it runs for 10 sec with only 128k in task manager and close? Please fix i dont like win 10! (Sorry for bad english!!!)
First, you can't just get Windows 7 without purchasing a license if you have 8. Second, if you created a bootable USB stick for the installation you would not be running any type of setup.exe to start the setup, you boot off the USB disk, it will run the setup.
Are you trying to run the setup from withing Windows? Sounds like you are doing things the wrong way here.
You will need to spend about $100 to get a Windows 7 license, I suggest you just get use Windows 10 for a bit, it's a lot better than using 8, which is what you had before.