*This tweak does not work in Windows 95/98

To remove the Windows default Image Viewer, first: Click Start Menu Select Run menu Type "cmd", (for Windows Me, type "command") Then type "regsvr32 /u shimgvw.dll" to unregister this dll. This will stop it from previewing any picture that it support, e.g. JPEG, Bitmap, GIF.... * Before perform this tweak, make sure that you have the alternative Image Viewer installed in you windows e.g. ACDsee, FireGraphics... because once you do this tweak without that application, you can't open and view your image anymore! So, to undo it, type "regsvr32 shimgvw.dll" in command prompt.

SPEED UP BOOT BY DISABLING UNUSED PORTS. You may have tried many tweaks like modifying windowsXP start-up applications, prefetches, unload DLLs method,etc. And yes those methods do work for me. I have just accidentally found out another way to give you an extra boost in windowsXP's boot performance. This is done by disabling your unused devices in Device Manager. for example, if you don't have input devices that are connected to one of your USBs or COM ports, disabling them will give you an extra perfromance boost in booting. Go to Control Panel -> System -> Hardware tab -> device manager Disable devices that you don't use for your PC and then restart.

CLEAR UNWANTED ENTRIES FROM ADD/REMOVE PROGRAMS. Run the Registry Editor (REGEDIT). Open HKEY_LOCAL_MACHINE\ SOFTWARE\ Microsoft\ Windows\ CurrentVersion\ Uninstall Remove any unwanted keys under "Uninstall."

CLICKING * .AVI FILES ON EXPLORER CAUSING 100% CPU USAGE. Well windows seem to have a REALLY big problem when it comes to reading AVI files. It seems that when you click on an AVI file in explorer, it'll try to read the entire AVI file to determine the width,height, etc. of the AVI file (this is displayed in the Properties window). Now the problem with Windows is that if you have a broken/not fully downloaded AVI file that doesnt contain this info, Windows will scan the entire AVI file trying to figure out all these properties which in the process will probably cause 100% CPU usage and heavy memory usage. To solve this problem all you have to do is the following: 1. Open up regedit
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