Make sure you followed the Best Practices for Windows 7 install given in Clean Reinstall - Factory OEM Windows 7
which are the same for retail. By sticking with the tools and methods given you will be assured of a perfect install going forward.
Most importantly use only the drivers
given by the installer and delivered by WIndows Updates (under Optional), making sure Updates are set to Automatic and all fully installed - including Net Framework 4 and all of it's attendant Updates. Automatically get recommended drivers and updates for your hardware
If problems then present themselves work through the Troubleshooting Steps for Windows 7
checking the logs for repeat errors to resolve, establishing a Clean Boot, utilzing the System Resources to find solutions to problems.
If anything catches your attention post it back for further help, or google error messages verbatim to learn how others have resolved them.