Cant install any windows from usb

[Sebastian_19]

Hello
I have been trying to install a new version of windows or older, i tried windows 7, made a bootable usb of it, then when i select to boot from usb, it either says BOOTMGR is corrupt, or with other isos: the file is possibly corrupt. the file header checksum does not match the computed checksum

I tried windows 8, same error. BOOTMGR is corrupt or missing.
Help me please. I need to downgrade my windows 8 to windows 7 ;/
PC Specs:
Intel core i3-540 3.07 GHz
Motherboard MSI, Model H55M-p31(MS-7636) Bios American Megatrends Inc. V1.5
Gigabyte GTX 1050
8 gb ram

help please ;/

 

[manddy123]

Which software did you use to create that bootable USB?

 

[Sebastian_19]

Which software did you use to create that bootable USB?

I tried using
Rufus
Opening the iso and manually throwing all fles to usb
PowerIso

None worked, always same errors. I tried tons of diffrent isos

 

[Sebastian_19]

Tried, it says cannot format the USB. Then the USB screws up in My Computer, i cant see any space, i used stock windows formater, and usb worked again. Still cant install any windows ;(

 

[manddy123]

Try this one then:
https://www.pendrivelinux.com/yumi-multiboot-usb-creator/

 

[Sebastian_19]

Tried, same error. Bootmgr image is corrupt
however the yumi bootmanager is showing up fine.

 

[Sebastian_19]

Problem solved, it appears the USB device was faulty. Weird that storing other data wasnt crashing.