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Its a well known fact that if one or more required boot files are found to be missing or corrupt, a Windows system might fail to boot. Such problems can be resolved by using Windows installation disc. But still if it is not resolved, the the only solution remains is to install the operating system, which causes data loss.

Now, if no valid data backup is available, you need to use windows data recovery utilities.

Lets consider to boot a Windows Vista or Windows 7 based system and it fails to boot displaying the below error message on screen:

“The boot selection failed because a required device is inaccessible”

It is 0xc000000f error code. You cannot boot into the system even at subsequent attempts of restarting the system.

Reasons:



One of more Windows boot items, like MBR, BCD store etc., are missing or corrupt



Incorrect BIOS settings for the boot device, usually hard drive. This might occur if you have recently performed some changes in system BIOS settings.



Solution

If after changing the BIOS settings, Windows is unable to boot, then configure BIOS to default fail-proof settings and after that set hard drive as the primary boot device. And if it is not OK then we should repair Windows startup files using windows recovery environment as follows:



Insert Windows Vista or Windows 7 installation disc into the computer and boot the system



Press any key for starting the repair process when prompted for



You need to then select the time, language and currency and the desired input method



Click ‘Next’ and select ‘Repair your computer’ option



The ‘System Recovery Options’ dialog box appears, at which you need to select the Windows installation you need to repair. Click ‘Next’.



You can then select the ‘Startup Repair’ option. Instead, you can also run ‘Bootrec.exe’ through ‘Command Prompt’



If the above steps fail to boot Windows successfully, then it is suggested to reinstall the operating system and use your recent data backup to restore the lost data. If no data backup is available, use windows data recovery software for extracting the data. These software are embedded with high-end scanning algorithms. The software also enable you to perform comprehensive Partition Recovery in all cases of logical crashes.

Mobile backup is the best solution for Windows mobile. Earlier it was bit difficult to copy data on PC. Windows mobile contains many important contacts, SMS messages, calendar details, photos and videos which have to be stored on different device so that it can be restored on mobile again. There are many chances of data to be lost either you have deleted your data by mistake or due to system crash, some internal error or the phone is lost somewhere. Windows Mobile Backup is very useful software developed by windows. And now many mobile companies are using this backup features to recover the data from their phone and giving good services to their users.

In every mobile, contacts are the most important data. Without contacts no one can call or send messages to any one. When the backup of contacts is done you feel more relax. The backup of SMS is also important. If the memory or inbox is full you cannot receive new messages. For that you have to backup your old message on your system so that new message can come. After backup of SMS, you can also reorder or keep the record of messages received by a person. And you can also restore the important SMS back into window mobile. In window mobile, people used to store their special moments and photos of their life and want to protect from any damage or lost. Windows Mobile Backup helps these people to store their special moments to PC through mobile backup software. Windows mobile have many features similar to a system. It stores files and calendar to remind about some special meeting, occasion, birthday and anniversary of our dearest one which we usually forget. One can easily use this tool known as backup calendar from windows mobile. There are numerous editions of windows mobile like Windows Mobile 2003 Phone Edition, Windows Mobile 2003 Pocket PC, Windows Mobile 5 Pocket PC, Windows Mobile 6 Professional, Windows Mobile 6.1 Professional etc.

A Windows registry is an information tank that stores all information about operating system hardware and all other softwares residing in your PC. Working similar to heart in human body, it pumps out the information to be used as instructions while running any program. With passage of time, it gets cluttered and need a fix. Thanks to windows registry repair software that gets into action to avid the malfunctioning and crashes of PC.

This windows registry repair software scans the information and makes necessary changes analyzing, detailing and removing the useless information. Various functions that are carried to improve stability and performance of system are:

Cleaning windows registry and fixing error (if any).

Prevent crashes, reboots and lock-ups.

Increase your computer stability and ability to perform

Well, a good news is that the windows registry repair software is available for absolute no cost, that is, it has now been the window registry repair freeware. Many websites and companies are providing windows registry repair free downloads. However, the registry repair software may be distinguished at each site.

Well, commonly recommended registry repair softwares may be lined up as:

Tune-up Utility: it is considered to be the most complete software in the market with the benefits of defragging the registry.

Registry Mechanic: a simple utility checker fixing most common of problems seeks to be more focused at its work.

XP Repair Pro: it is advanced registry software that is quiet quick, smooth in its functioning and effective. Its benefit lies in its ability to provide great graphical user interface design.

However, a common benefit with all these software lies in the re-location of deleted information if the user feels uncomfortable. Hence, with this software user can enjoy the freedom to manage the data clutter free.

For Windows to boot properly, Hal.dll and Ntoskrnl.exe files should match with each other or else the system will fail to boot. This is because all implementations of Windows Hardware Abstraction Layer(HAL) are dependent on Windows kernel in some or other way and thus, they come in matching sets. A Windows based system prompts errors and prevents you to access the stored files and folders if these files mismatch. In such cases, if no suitable backup is available, you need to use a powerful hard drive recovery utility that could extract the data.

For an instance, consider that use a Windows XP based computer system. You start the computer and receive an error message, as below: “Windows could not start because of an error in the software. Please report this problem as : load needed DLLs for kernel. Please contact your support person to report this problem.” You cannot boot into the system and cannot access the files stored.

Cause

The prime reason for this error message to occur is that Hal.dll and Ntoskrnl.exe files mismatch.

Solution

To solve file mismatch issue, you need to follow the below steps:

Boot the computer using Windows XP installation disc. To do so, first configure your system to start from CD or DVD drive. Press any key, when prompted for Start Recovery Console by pressing ‘R’ at ‘Welcome to Setup’ screen Select the Windows installation to be repaired Specify the root administrator password, when prompted for Run bootcfg /list command through command prompt and note the entries of your Boot.ini file Run bootcfg /rebuild command To add Windows installations to the Boot.ini file, you need to follow the on-screen instructions Exit the Recovery Console Execute fixboot command

Try to duplicate the above behavior. If the error persists, reinstall Windows XP and restore from backup. In case of any backup concerns, scan the hard disk using a commercial Hard Drive Recovery Software to restore missing files and folders. Hard Drive Recovery utilities are powerful tools designed with advanced technology to safely recover the lost data.

Stellar Phoenix Windows Data Recovery is a comprehensive recovery utility that salvages lost data for Windows 7 RC1, Vista, XP, 2003 and 2000 based systems. It is a reliable Hard Drive Recovery tool that provides advanced options, like File Filter, Append Header, RAW File Recovery and others. It supports FAT32, VFAT, NTFS and NTFS5 file systems.

At the time of threat to the data stored in your computer , it is necessary to protect your data from all the threats. Data loss in computer systems primarily occurs due to various logical and physical factors.

The logical reasons are:



System malfunctioning



File system damage



Application damage



Software bugs etc.



And the physical factors are:

heat, water, dust, PCB failure, accidental dropping, natural disasters, etc.

The best way to overcome any kind of data loss. But, if there is no valid backup or backup falls short to restore the required data, then there is a need to use an advance Data Recovery Software. If you are using windows operating system then you need a windows data recovery software to solve logical failures and Data Recovery services to solve physical failures. However, using these recovery services or software ensures recovery of data, there are few questions that come to our mind before using such applications or services:



Will the software perform complete recovery of data?



Is recovery of lost, deleted, and missing e-mails possible?



What if the software is unable to recover the data?



How to choose the best recovery software or services?



Is the recovery application easily understandable without any prior technical knowledge?



Is it possible to recover data from hard drive damaged in natural disasters?



Can the recovery services ensure recovery of data after server damage or failure?



Is the recovery process performed in dust free environment?



To get answers for all your above questions and before selecting any data recovery service or software, you will need to check the below parameters related to the recovery service or software:



Preview all the recoverable files by using the demo software.



Check the client feedback of the recovery software on the company’s website.



Analyze all the clients of the company.



Carefully read the software’s user guide and help manual.



Run the demo version to preview its user-interface.



Check the company’s website to ensure that the company provides complete money back guarantee, in case the software is unable to recover the data.



Compare the price of the software with other recovery applications.



Go through the company’s website to make sure that the company ensure complete data confidentiality and in the controlled environment of class 100 clean room facility.



Stellar Information Systems Limited, a reliable name in providing data recovery services and software, fulfills all the above requirements. The Data Recovery services provided by the company is performed under the supervision of highly qualified and rich experienced data recovery experts. The company also provides numerous Data Recovery Software that help you to recover almost every kind of data after any data loss scenarios.