When you reformatted your hardrive, I assume you reinstalled your operating system, or your computer would not work at all. If your operating system came with a version of direct X which is newer than the X9 that RTW came with, then you tried to install an older version over a newer version, which could cause trouble. Another possibility is that there was something screwy with your disk, like a scratch or dirt, which made the installation go wrong.

This is what I suggest you do. Go on line and install the newest version of direct X you can find (11?) Hopefully that should repair your problem, whatever caused it. If that fails, I guess you could reinstall your OS all over again and this time choose not to install direct X from the RTW installer. Good luck.