Go into the prefetch folder and delete all the files Beware It should look like this c windowsprefetch. Hp Proliant Dl380 G7 Ilo Firmware Upgrade. We need to edit a registry key to tweak it. Open regedit and browse to this key. HKEYLOCALMACHINESYSTEMCurrent. Control. SetControlSession ManagerMemory ManagementPrefetch. Parameters. 3. Under this key you should see a value named Enable. Prefetcher. 4. It has 4 possible values 5 Disabled The prefetch system is turned off. Application The prefetch only caches applications. Boot The prefetch only caches system boot files. All The prefetch caches boot, and application files. You need to not disable it entirely. This would actually make boot time longer. This is because this feature is also used to speed up the loading of boot files. That is why you should pick the number 2 option. It allows you to keep the advantage of caching system files, without continually clogging the system up with applications. Set the value to 2 and reboot. The 2nd time you boot it should boot much faster. Remember that, the side effect is that launching individual applications once Windows has loaded will now be slightly slower.