How to recover Windows XP in case of missing 'isapnp.sys' file
How to recover Windows XP in case of missing 'isapnp.sys' file
ISAPNP.SYS is a critical driver file located in the System32 folder of your Windows operating system. This driver is responsible for controlling the plug-and-play for ISA(Industry Standard Architecture) type expansion slots. The file is prone to corruption due to various reasons, such as virus or malware attacks, operation system errors, improper system shut down etc. This often results in a serious error which makes your system unbootable. As a consequence, you lose all the precious data stored on your system hard drive. To overcome this problem, you need to go for Windows recovery through a reliable third-party utility.
For instance, you may come across the following error message while trying to start your Windows XP-based computer:
"Windows could not start because the following file is missing or corrupt:
windowsSystem32DriversIsapnp.sys"
Cause:
The 'isapnp.sys' file is corrupt or damaged. It may also happen that the file does not exist in the System32 folder.
This would prevent you from accessing the valuable data stored in your system. To recover Windows files in such situation, you may use an updated backup. If the backup is missing, follow below mentioned resolution steps.
Resolution:
Use Windows Recovery Console to replace the corrupt 'isapnp.sys' file and perform Windows partition recovery. To do this, follow the procedure given below-
Change boot preferences in BIOS to start the system using Windows XP bootable CD.
Now, insert the CD and reboot your system.
At the 'Welcome to Setup' screen, press 'R' to enter the Recovery console.
In the Recovery Console, rename the 'isapnp.sys' file by running the following command:
ren c:windowssystem32driversisapnp.sys isapnp.old
Now, type this command and press Enter:
expand cd-romdrive:i386isapnp.sy_ c:windowssystem32driversisapnp.sys
Exit Recovery Console by running the 'exit' command. .
Restart the PC to see whether the issue is resolved.
If the above resolution steps fail to fix the problem, you should take help of an efficient Windows recovery software. These third-party tools are capable of recovering all the lost files, documents, photos, videos, databases, emails etc. from your inaccessible system. They also include various add-in functionalities, such as cloning, imaging etc. A clone or an image may serve as a backup at the time of any system crash.
Stellar Phoenix Windows Data Recovery is a proficient tool that recovers lost, deleted, or formatted data from FAT, NTFS, and exFAT file systems. Moreover, the software is compatible with Windows 7, Vista, Server 2003, XP, 2000, and NT4(SP6).
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