iiv reinstalled my computer then installed openbve now it has no train folder i deleted and redownloaded but still the same nd when i load a route i only see white boxes
In your BVE folder make a new train folder. Unfortunately, you will have to keep doing this as long as you keep restoring it. For the white boxes make sure:
1) The train even has a exterior
2) The exterior folder is in the train folder. This is required.