The error during install is normally due to corrupted media or installer.
Where did you get Windows 7?
Verify the ISO integrity or download another, then burn DVD using ImgBurn at 4x speed with Verify.
Next try writing confirmed ISO to flash stick using this tool with Win 7 in dropdown menu: Universal USB Installer – Easy as 1 2 3
Boot under USB, Removable or HD's using one-time BIOS Boot menu key.