6 Tips to Fix Slow Boot Times in Windows 10. Do you want more time to do productive work? Do you find that, over time, your Windows 10 machine boots slower and slower? These six tips can save a lot of time and speed up the booting process so you can get to work more quickly. My favorite is to disable Fastboot, which is a misnomer if I ever saw one. The next thing you can do is increase virtual memory. But, all of these tips will help. Now, get to work.