my computer won't start - missing or corrupt the isapnp.sys file

original title: my computer does not start

my computer does not start.  It has windows xp.  stupidly, I cleaned the keyboard when the computer was done.  After that, he went and couldn't boot more.  response on monitor: "windows has not start because the following file is missing or corrupt: system32\DRIVERS\isapnp.sys.»  You can repair this file by starting windows configured using the original set of CD-ROMs".

What should I do?  I don't have the cd rom.  My documents have no back up.

If you have the CD, use you it as a reference:

How to get installed XP on your computer? What type/brand of computer do you have?

Tags: Windows

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