62. Perform a virus scan on your computer regularly. If you don’t want to install virus protection, use some of the free online virus scanners.
63. Remove extra toolbars from your Windows taskbar and from your Internet browser.
64. Disable the Windows Vista Sidebar if you’re not really using it for anything important. All those gadgets take up memory and processing power.
65. If you have a SATA drive and you’re running Windows Vista, you can speed up your PC by enabling the advanced write caching features.
66. Learn how to use keyboard shortcuts for Windows, Microsoft Word, Outlook, or create your own keyboard shortcuts.
67. Turn off the Aero visual effects in Windows Vista to increase computer performance.
68. If you are technically savvy and don’t mind taking a few risks, you can try to overclock your processor.
69. Speed up the Send To menu in Explorer by typing “sendto” in the Run dialog box and deleting unnecessary items.
70. Make sure to download all the latest Windows Updates, Service Packs, and hot fixes as they “normally” help your computer work better.
71. Make sure that there are no bad sectors or other errors on your hard drive by using the ScanDisk orchkdsk utility.
72. If you are not using some of the hardware on your computer, i.e. floppy drive, CD-ROM drive, USB ports, IR ports, Firewire, etc, then go into your BIOS and disable them so that they do not use any power and do not have to be loaded during boot up.
73. If you have never used the Recent Documents feature in Windows, then disable it completely as a long list can affect PC performance.
74. One basic tweak that can help in performance is to disable error reporting in Windows XP
75. If you don’t care about a pretty interface, you should use the Windows Classic theme under Display Properties.
76. Disable short filenames if you are using NTFS by running the following command: fsutil behavior set disable8dot3 1. It will speed up the file creation process.
77. If you have lots of files in a single folder, it can slow down Explorer. It’s best to create multiple folders and spread out the files between the folders.
78. If you have files that are generally large, you might want to consider increasing the cluster size on NTFS to 16K or even 32K instead of 4K. This will help speed up opening of files.
79. If you have more than one disk in your PC, you can increase performance by moving your paging file to the second drive and formatting the volume using FAT32 instead of NTFS.
80. Turn off unnecessary features in Vista by going to Control Panel, choosing Uninstall a program, and then clicking on Turn Windows features on and off. You can turn off Remote Differential Compression, Tablet PC components, DFS replication service, Windows Fax & Scan, Windows Meeting Space, and lots more.
81. Install a free or commercial anti-virus program to help protect against viruses, etc. Make sure to use an anti-virus program that does not hog up all of your computer resources.
82. Completely uninstall programs and applications using a program like Revo Uninstaller. It will get rid of remnants left behind by normal uninstalls.
83. If you know what you are doing, you can install several hard drives into your machine and set them up in RAID 0, RAID 5, or other RAID configurations.
84. If you are using USB 1.0 ports, upgrade to 2.0. If you have a Firewire port, try to use that instead of a USB port since Firewire is faster than USB right now.
85. Remove the drivers for all old devices that may be hidden in Device Manager that you no longer use.
86. A more extreme option is to choose a faster operating system. If you find Vista to be slow, go with Windows XP. Switching to Mac or Linux is also an option.
87. One of the easiest ways to speed up your PC is to simply reformat it. Of course, you want to backup your data, but it is the best way to get your computer back to peak performance.
88. Speed up Internet browsing in IE by increasing the number of max connections per server in the registry.
89. If you use uTorrent to download torrents, you can increase the download speeds by tweaking the settings.
90. If you have a desktop background, make sure it’s a small and simple bitmap image rather than a fancy picture off the Internet. The best is to find a really small texture and to tile it.
91. For the Virtual Memory setting in Windows (right-click on My Computer, Properties, Advanced, Performance Settings, Advanced, Virtual Memory), make sure the MIN and MAX are both the same number.
92. If you search on Google a lot or Wikipedia, you can do it much faster on Vista by adding them to the Vista Start Menu Instant Search box.
93. If you have a custom built computer or a PC that was previously used, make sure to check the BIOS for optimal settings such as enabled CPU caches, correctly set IDE/SATA data transfer modes, memory timings, etc. You can also enable Fast/Quick boot if you have that option.
94. If you have a SCSI drive, make sure the write cache is enabled. You can do so by opening the properties of the SCSI drive in Windows.
95. If you have a machine with an older network card, make sure to enable the onboard processor for the network card, which will offload tasks from the CPU.
96. If you are using Windows Vista, you can disable the Welcome Center splash screen that always pops up.
97. If you already have anti-spyware software installed, turn off Windows Defender protection.
98. If you are running a 32-bit version of Windows and have 4GB of RAM or more, you can force Windows to see and use all of the RAM by enabling PAE.
99. Buy a new computer!!!

Pretty easy eh?