In Windows XP systems, the Ntoskrnl.exe file is a system file, placed in the Windows\System32 folder, that is used to load the operating system. It is actually a kernel image of the operating system, which is loaded during the system startup, hence very critical for the booting process. Therefore, it is very obvious that the system would not boot if some mishap happens with this file.

However, there are some workarounds to deal with this problem. If these do not work, then I would recommend to use a third-party Windows hard drive recovery software to recover hard drive.

Taking a real-world example, consider that you are trying to start your Windows XP system but fail at the booting stage. An error message is displayed, that is:

“Windows could not start because of a computer disk hardware configuration problem.

Could not read from the selected boot disk. Check boot path and disk hardware.

Please check the Windows documentation about hardware disk configuration and your hardware reference manuals for additional information.”

Cause:
This booting problem can happen because of the following reasons:
The Ntoskrnl.exe file is damaged, corrupt, or missing.
There is hardware problems with the system.

In the Boot.ini file, the path of the partition is not set correctly.
Windows XP is installed at a location that is not specified in the Boot.ini file.
The boot loader section in the Boot.ini file contains invalid Default value.

Resolution:
To resolve such problems, you should perform either of the following methods to recover hard drive:
Edit the Boot.ini file: You should edit the Boot.ini file to rectify the Default value. Also, you should make sure that the all the respective entries in the [Operating System] section refer to the Boot.ini file.
Use the Bootcfg utility: You should rebuild the Boot.ini file in the Recovery Console using the Bootcfg.exe tool.
Run the CHKDSK command: You should use the chkdsk command to scan and repair any hard disk-related issues. For this, you should use the chkdsk command with the following syntax:
CHKDSK /r

These mentioned methods are sufficient enough to repair such issues. Having said that, there are times when you cannot boot the system even after using these methods. There are certain third-party hard drive recovery software that can help you to recover hard drive in such situations. These Windows hard drive recovery tools have highly interactive user interface that make the data recovery easy and safe.

Talking of such hard drive recovery software, Stellar Phoenix Windows Data Recovery is the best tool in the town that recovers data from inaccessible hard disks. Compatible with Windows 7, Vista, Server 2003, XP, and 2000, this email recovery tool recovers deleted emails from various email applications. Also, this hard drive recovery utility recovers data from FAT, exFAT, and NTFS file systems.