Follow these steps if you ever need to run Dell Windows 7 PC Restore.
But be aware that the factory pre-install is not the best way to run Windows 7 since it is loaded with bloatware and duplicate utilities that have better versions built into Windows 7. For this reason to get best performance many tech enthusiasts choose to Clean Reinstall - Factory OEM Windows 7.
Until then I would at least Clean Up Factory Bloatware
to improve performance. In addition you can Optimize Windows 7
especially editing visual effects of animation, fading, sliding, dragging intact and selection rectangle.
If performance issues still exist work through these Troubleshooting Steps for Windows 7
to assure a Clean Boot, check the logs for repeat errors to resolve, utilize System Resources to find solutions to problem, Generate a System Health Report.
Test your hardware using Dell Diagnostics: Dell Diagnostics Utility - How to Run the