System32/Driver/isapnp.sys

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letschat49

Honorable
Sep 12, 2013
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My computer says it has the corrupted or missing file System32/Driver/isapnp.sys.
I do not have the CD can I purchase one I see that are roboot CD? Would that repair it? Or do I have to purchase a full Windows XP CD to repair?
I do have my product Key code.
 
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das_stig

das_stig

Glorious
Jul 24, 2009
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Technically you could download one from the various iffy sources on the net, but if you have a legal key and your missing the Windows XP CD, you could argue that, since you did actually purchase XP and you have a valid product key, downloading a Windows XP CD image from anywhere should be within your rights. Now the only true legal way is to contact Microsoft for a replacement Windows XP Setup CD, assuming you can show proof of purchase.
 
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kenrivers

kenrivers

Illustrious
Dec 29, 2010
6,684
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Once you have the XP CD you can do the following to fix the problem:

"To resolve this issue, use Recovery Console to replace the Isapnp.sys file.
Windows XP
To replace the Isapnp.sys file in Windows XP, follow these steps:
1.Start the computer from the Windows XP CD-ROM.

2.At the Welcome to Setup screen, press R to start Recovery Console.

3.If you have a dual-boot or a multiple-boot computer, type the number that corresponds to your Windows XP installation when you are prompted to select the Windows installation to log on to, and then press ENTER.

4.When you are prompted for the Administrator password, type the password, and then press ENTER.

Note If the administrator password is blank, just press ENTER.

5.At the C:\Windows prompt, type the following command, and then press ENTER:
ren c:\windows\system32\drivers\isapnp.sys isapnp.old
Note The steps in this article assume that you installed Windows XP to the C: drive. The actual location of your Windows installation may vary.

6.At the C:\Windows prompt, type the following command, and then press ENTER:
expand cd-romdrive:\i386\isapnp.sy_ c:\windows\system32\drivers\isapnp.sys
For example, type:
expand d:\i386\isapnp.sy_ c:\windows\system32\drivers

7.After the file is successfully expanded, type exit, and then press ENTER to exit Recovery Console.

8.Restart the computer."

Source: http://support.microsoft.com/kb/315311
 
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