My screen saver was function very fine until this day that makes tough for me on making it normally. I just remembered that prior to the malfunction several changes was made to my computer. Such things like I installed Skype, Visual Basic 6.0 and Adobe Photoshop CS3. I also upgraded my video card and changed my USB to Wireless mouse. I might think one of this is the reason behind my problem.
Your problem was because of changing the connection to a wireless device. You are currently using Windows Vista and it has also limitations. One of those is; after you done the connection of a wireless device. That's the reason why your screen saver doesn't work now.
Well Windows Vista experience some problems with using a wireless mouse device and other wireless input device which cause screensavers and other power saver feature not to work normally. But Windows have already uploaded a patch to fix this problem in Windows Vista is available for download at windows update server.
First, Open RUN window press CTRL + R, then type msconfig –> click on startup tab, now disable by uncheck it this entry PCMService.exe. Restart your computer when told so.
Second, Open your internet browser and open the site for windows update. Locate for an update on "Microsoft HID Non-User Input Data Filter", just download it and wait until installation is finished.
Those changes you made to your computer are normal program installations and none of them are related to the Windows screen saver that’s why it shouldn’t be affected. If your screen saver is not working properly, first, check that the setting is not disabled. Click “Start” then “Control Panel”. On the next screen, set the view to “Small icons” then click “Personalization”.
On the next screen, click “Screen Saver” on the bottom right corner of the screen.
In “Screen Saver Settings” window, select a screen saver in the “Screen saver” dropdown list.
If you want to customize the screen saver, click “Settings” then change the settings. Click “OK” when you are finished. To view the selected screen saver, click “Preview”. To end the preview, just move the mouse. When you are done, click “OK” and that’s it. Note: not all screen savers have settings or can be customized.