I cant copy an 18gb .mkv file to my 2TB WD External Hard Drive. The drive is brand new and is formatted to NTFS, and it still wont copy.. it does not say that it wont fit.. it copies until it is approx 75% complete and then stops and freezes other programs that are running on my computer.. I also have a Maxtor 1TB external HD, (also formatted NTFS) and the same thing happens... so i am thinking it must be something to do with my laptop... I have searched everywhere, and the only answer i can find is that the drive is FAT32 and needs to be formatted to NTFS, but my drives are already that.... I have no idea, please help...

FAT can't handle 4 GB+ files, it is a very old File System FAT can't handle 4 GB+ files, it is a very old File System

That the drive on his laptop is formatted to FAT32 is a non-issue. While it is true that you can have larger hard drive sectors using NTFS, FAT32 will just use a larger number of sectors to store large files. While that will cause it to take longer to read and write very large files, it will not prevent copying or moving of files. But if a file is corrupted windows can lock up while trying to read the file. Also some copy protection implants data that windows cannot read, when using the file this data is normally ignored, but when copying a file windows tries to duplicate everything and since it cannot read said data, one of two things usually happens.
Depending on the type of data used, either a read error is generated, or in some cases windows locks up, trying to read data designed to be unreadable to windows. That the drive on his laptop is formatted to FAT32 is a non-issue. While it is true that you can have larger hard drive sectors using NTFS, FAT32 will just use a larger number of sectors to store large files. While that will cause it to take longer to read and write very large files, it will not prevent copying or moving of files. But if a file is corrupted windows can lock up while trying to read the file. Also some copy protection implants data that windows cannot read, when using the file this data is normally ignored, but when copying a file windows tries to duplicate everything and since it cannot read said data, one of two things usually happens. Depending on the type of data used, either a read error is generated, or in some cases windows locks up, trying to read data designed to be unreadable to windows.