Can't read or play DVD on computer

I recently brought some DVD’s in Thailand. Although most of them are fine, I have a couple that will not play on my computer. They play fine in a desktop player but when put in the computer the DVD software comes up with the error “Unknown File Format”

If I look at the disk in explorer I can see the video ts directory and the vobs inside but they all show as 0 bytes.

If I try to copy a vob it comes up with a crc error.

The disks are region free and not copy protected and run fine in a desk top player.

Anyone have any idea what is going on here.