assuming the firmware has such options. Not all do.
i have run into similar problems with a minnowboard based htpc i built some time back. the uefi firmware has no support for legacy booting at all, and the uefi version lacks the "obsolete" extensions that win7 needs to boot in uefi mode. saw the winload error first, as my media was made for mbr bios only, and saw absurd stop screens after i fixed it to have proper uefi support. had to use 8.1 on it instead.
judging from the info provided, this is a pirate copy of the install image, loaded with an activator like kms, or with removeWAT run immediately after install. Toady frowns on fascilitating piracy, but i just want to point out that most of these pirate images have the uefi partition stripped out of boot.wim to save space, and lack proper .efi files in the /EFI folder on the media, making them unbootable from uefi firmware. it is possible that the boot media used is so afflicted, which explains the missing winload error.
this error should not happen on original media.
if they are having issues getting slipstreamed media to stay under single layer dvd sizes, i suggest they use the win7 usb media creation tool provided by MS in the future. then they dont have to worry about burned media at all.
they should try enabing legacy booting first. if they dont have that option, they need to rebuild the boot media without stripping out the uefi parts of boot.wim.