Scannow+used+to+solve+Windows+problems

There are occasions when your computer is not performing as usual, and you wonder to yourself just what is happening. Now it could be many things and you go through the most obvious such as Defrag, clear Temp, etc. etc., but still to no avail. The cause may be the installing of a new program, or you may get a message .dll missing, there are a number of causes. One of the major things you can do ( Major because a takes a long time ) is run the Windows program called Scannow. This you do by going to :- Start > Run In the box type without the quotes “sfc /scannow” Note the space before the forward slash), then press Enter. ( SFC stands for :- System File Checker ) You will require your latest e.g. SP2 CD
 * Scannow used to solve Windows problems **

Sometimes when you install third party software, it may overwrite important operating system files. This can cause instability - or worse. Windows XP includes a command line tool that you can use if you think this may have happened (for example, if you get a message box warning that there is a problem with a .dll or the system just seems unstable). Here's how to use it:

This will check all your files against the correct ones on the CD where Windows has it’s copy of the essential files.

In particular if your folder DllCache as become corrupt you need to replace with a correct version and this is what Scannow does. Note however, on some installations not all the system files are included in this folder, in fact in Windows 2003 server the default is 300Mb, and you may only have some 50Mb in the folder ( Please note this is an aside of the issue) One of the answers is to implement my tip in another Edition of copying I386 to your hard-drive from the CD. This takes up some 450 Mb