Run “msconfig.exe” (System Configuration)
Click on the “Startup” tab
If necessary, click on the “Open Task Manager” link
Justify on selection of items to disable
Click on “Disable”

Run “taskschd.msc” (Task Scheduler)

Run “cleanmgr.exe” (Disk Cleanup) as 'Administrator'
Click on the “More Options” tab
Under “System Restore and Shadow Copies”, click “Clean up…“
Click on the “Disk Cleanup” tab
Select everything (Justify the Recycle Bin)
Click “OK”

Open “appwiz.cpl” (Programs and Features)
Uninstall justified programs
Restart if necessary

Windows Knowledge Base

Defraggler