Almost All Files Corrupted Upon Moving To New Computer

@MassacreWolfe Your desktop model says it is a SFF which means small form factor. There may be restrictions installing a video card. First installing a graphics card may (probably) require a power supply upgrade. Many SFF desktops use a none standard power supply. Most PSU's for SFFs will only increase the output a little and usually not enough for most moldern graphics cards. A SFF may not even have a PCIe slot for a graphics slot. Even is a SFF has a graphics slot you may only get a low profile card to fit in the slot. I do not use mods but a new mods folder should have a file resource.cfg. To add mods all you should have to do is copy the uncompressed mod file into the user mods directory. If the mod works in another computer it should work in the new computer. What confuses me is file corruption. I am not an expert on mods. I read somewhere you may have to delete some cache files but I don't see why the corruption issue. Try one mod and do not leave the compressed file in the mod folder. Winrar should work but Windows has a built in .zip file uncompreessor but you have to use Winrar if the file has the .rar extension.