Page file size is best left at default. I turn off system restore solely for the disk space I need. If you have disk space to spare, leave it on, as it can be a real life saver. I have hibernation and the screen saver off. My monitor is set to turn off after five minutes of idle time. Leave error reporting on. People complain when Windows has problems. Error reporting is how Microsoft becomes aware of the problems and fixes them. Make sure you get every single Windows update. Get a good antivirus program.(Norton and Mcaffee do not cut it) Get the following security programs: Ad Aware SE, Spybot Search and Destroy, Spyware Blaster, and Windows Defender. If you update and run all of these programs(antivirus, windows, anti spyware software) on a regular basis, your machine should be pretty much immune to any and all forms of malware. It should stay as fast as it was on the fresh install for years to come.