I used a program a few weeks ago to clean the prefetch folder and ever since it's been empty? some things have seemed slower or slower to load when windows restarts, like Nav and NPF. In the registry enableprefetcher is set at 3 for both, I've got no more idea's. Any idea? Thank you..

Try just deleting the folder altogether, then reboot. Windows should put it back and hopefully start putting things back in it as you use launch them (programs, etc.).

Jim

change the settings in the registry to "1" auto instead of "3" manual.

you don't have to clean out the prefetch folder because you said it's already emty.

The reason I suggested deleting the folder was because I recreated what he did. I emptied out my prefetch folder and rebooted a couple times and nothing came back. When I deleted the folder, after a reboot things started coming back as I used them. The only file that didn't come back though was layout.ini. YMMV

Jim