Now disable all unnecessary options in Visual Effects tab, you can remain following options enabled according to your requirements:
3. Open Folder Options and click on View tab:
Now disable following options:
Other options don't affect the system performance. You can enable/disable them according to your requirements.
4. Right-click on My Computer icon on Desktop and select Manage (You can also open it by typing services.msc in RUN or start menu search box and press Enter).
Now goto Services & Applications -> Services. Here you can set a few unnecessary services to Manual, which will not start with windows and will decrease the boot time and will increase system performance.
Please follow the following tutorial to know about which services can be safely set to MANUAL:
Windows Vista Services that can be Safely set to MANUAL
5. Type msconfig in RUN or Startmenu search box and press Enter. Now goto Startup tab and deselect the unnecessary entries, which you don't want to start automatically with Windows, e.g. you can disable VGA driver utility, Sound Card utility, etc to speed up the startup time and to increase system performance.
You can also disable these items using Windows Defender. Open Windows Defender and click on Tools and then click on "Software Explorer".
6. Open Sound in Control Panel (or type mmsys.cpl in RUN or Startmenu search box and press Enter), goto Sounds tab and select No Sounds in Sound Scheme section. Or you can remain some of your favorite sounds but set Exit Windows, Windows Logoff, Windows Logon and Start Navigation to (None).
7. After following all above mentioned points, you'll see a big improvement in your Windows Vista performance. If you want to tweak more, then you can use 3rd party tools which are listed here:
Windows Vista Tweaking Software List
8. At last I'll advise to defrag the HDD regularly, install only necessary software, use the latest drivers and keep your Windows updated.
Source:www.askvg.com