Boot Windows 7 Faster

One of the reasons for Windows 8 booting faster than Windows 7 is because it has fewer extras enabled by default.

These extras include features/services such as Remote Differential Compression, XPS Services, Windows Gadget Platform among others that you’ll probably never use.

To disable these features in Windows 7 (which is completely safe to do by the way), follow the steps listed below:

1. Start
2. Control Panel
3. Programs
4. Click ‘Turn Windows features on or off’ (found at the top left of the window)
5. Remove the ticks/check marks from the boxes next to the options you do not want (make a note of them in case you decide to turn them back on later)
6. Click OK
7. Restart your computer - the computer will have to configure the changes you've made so check your speed from the second restart after making the changes. 

NB:  I did experience a slight increase as opposed to a significant increase in boot-performance on my computer, but that is due largely to the fact that my computer is already almost tweaked to its limit for performance.  
Please let me know what your experience is like in the comments section.

You can also check these links for more performance enhancing tweaks:

• Remove unwanted fonts
• Clean up your hard drive
• Defragmenting your drive
• Speed up shut down time
• Stop unwanted programs from starting