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In order to install Windows on your system, you must activate the product using a valid product key. After you enter a product key while installing Windows if system reports it invalid, the possibility is that you have entered a wrong product key. But if you are sure that the key entered is valid, there might be several reasons causing this behavior including hard drive damage. In case of hard drive damage, you need to replace it and restore lost data from backup. But if backup fails to restore, hard drive recovery solutions come as rescue.
 
While trying to install Windows XP on your computer, when you try to enter the product key, you encounter the similar error displaying on screen:
 
“The CD Key which you entered is invalid. Please try again.”
 
You might also receive an error telling that the product key used is invalid.

Cause
 
The above error might be the outcome of below possible reasons:
 
1. Using an invalid product key
 
2. An antivirus program is scanning the computer
 
3. Windows XP installation CD is damaged
 
4. Hard disk is damaged
 
5. Incorrect system date in CMOS  (Complementary Metal-Oxide Semiconductor) settings
 
6. Some extra drivers are installed that are interrupting the installation
 
Solution
 
You should follow these steps to solve the existing problem:
 
1. Make sure that the product key you are entering is correct. Try making use of keyboard number keys instead of numeric keypad
 
2. Disable antivirus software scan. You need to ensure that no antivirus software is turn in computer BIOS
 
3. Replace the Windows XP installation CD if damaged
 
4. Ensure that the hard disk is not damaged. If it is, replace the hard disk and restore lost data from backup. Contact hard drive recovery service professionals if no or invalid backup is available.
 
5. Verify CMOS settings for correct system date
 
6. To provide clean installation of Windows, restart Windows without the installed extra drivers
 
7. You can also try copying Windows XP installation files to hard drive using command prompt
 
Hard Drive Recovery
 
It is the dedicated help provided by recovery experts to recover lost data from physically crashed drives. hard drive recovery software professionals undergo several sophisticated processes using advanced techniques in Clean Rooms in order to recover the lost data.
 
Stellar Information Systems Limited is the leading organization with highest success rate in providing safe hard drive recovery service. Its service caters all types of hard drives, including SCSI, SATA, IDE, EIDE and PATA. Stellar has Class 100 Clean Rooms and industry’s best recovery experts to facilitate advanced data recovery.

Robin Watson a student of Mass Communication doing research on hard drive data recovery software . He is also a freelancer for http://www.windows-data-recovery.net/

Article Source: System Reports Invalid Product Key while Installing Windows XP

Windows Vista is a popular operating system used for personal computers, business desktops, laptops, media center etc. But when you try to install or upgrade it, you might receive few errors that may prevent you to continue the process. During such situations, one of the typical reasons is that Windows Vista or Windows Vista setup fails to access the hard drive, probably due to hard drive damage. Thus, you are required to immediately replace your hard drive and restore as much data possible from backup. In case of backup issues when you cannot get the required information, hard drive data recovery tools are available to recover it.
 
While trying to install Windows Vista, you might encounter a Stop error:
 
“Stop: 0×0000007B”
 
This error occurs when Windows Vista cannot access the hard drive that contains the startup files for Windows Vista.
 
Cause
 
You get 0×0000007B error in any of the possible situations:
 
1. No compatible driver for the disk controller is located by Windows Vista
2. Your hard drive cabling is damaged or not connected properly
3. Your computer is affected by a boot sector virus
4. Incompatible computer BIOS
5. MBR (Master Boot Record) is being used by another program
6. Hard drive is damaged
 
Solution
 
To solve the existing issue, consider following these methods:
 
1. If you are attempting clean install of Windows Vista or trying to upgrade it, the problem is typically related to absent or incompatible driver, required to be provided. Download Windows Vista drivers and use Load Driver option of Windows Vista setup to install them
2. Make sure that your hard drive and interface cables are healthy and properly connected
3. Scan the computer for viruses
4. If BIOS incompatibility is the issue, replace your motherboard
5. Wait till the program using MBR completes its task
6. If hard drive is damaged, replace it and restore from backup. Consult hard disk recovery service technicians for their manual data recovery help, if you find that your backup cannot give required results or is currently unavailable. Hard Drive Recovery service includes all technical steps to recover data.
 
Stellar Information Systems Limited provides best and unmatched Hard Drive Recovery service. Its recovery solutions are available for all types of hard disks, involving SCSI, IDE, EIDE and SATA. The company has Class 100 Clean Rooms to offer secure Hard Drive Data Recovery. Stellar has rich experience and proven record in providing leading disk recovery service.
 

Robin Watson a student of Mass Communication doing research on hard drive recovery software . He is also a freelancer for http://www.windows-data-recovery.net/

Article Source: Stop Error 0×0000007B while Installing Windows Vista

Installing an upgraded version of the Windows operating system enables you to use the advanced features added in it. While the upgradation process benefits you in many ways, it might also result as a STOP error message when it fails. The occurrence of STOP error message makes the system unbootable or halts it (when the bootup process is already finished) making all the data inaccessible. The best possible way to restore the data in such situations is by using an up-to-date and valid data backup. However, in case of absence of an updated backup, you need to opt for advanced data recovery software to completely recover and restore your lost data.

Consider a practical scenario, where you upgrade your system from Windows 2000 to Windows XP. When you bootup your system after upgradation, you encounter the below error message:

“STOP: 0×0000007E (0xC0000005, 0×804E518E, 0xFC938104, 0xFC937E04)
SYSTEM_THREAD_EXCEPTION_NOT_HANDLED”
WUSB54GCx86.sys- Address 92D89498 base at 92D7c000, Datestamp 45c04cc9
The four parameters in the above error message differ with the computer’s configuration.
WUSB54GCx86.sys is the name of driver file that might cause the error.

You encounter the same error message each time you attempt to start your system.

Cause:

The above error message mainly occurs if your computer generates an exception that the error handler does not catch. This exception can be caused by any of the following:

• If the STOP error occurs after the first restart during Windows Setup or after Setup is complete, the system might not have sufficient hard disk space to install Windows XP.
• The computer BIOS (Basic Input Output System) might be incompatible with Windows XP and it needs to be updated.
• The video adapter drivers might be incompatible with Windows XP.
• A device driver or a system service might be corrupted or damaged.
• If the problem is associated with the Win32k.sys file, it might be caused by a third-party remote control program.

Resolution:

To troubleshoot and resolve the above issue, you will need to follow these steps:

• Make sure that you have sufficient hard disk space
• Update the computer BIOS
• Disable the device or update device drivers
• Remove unsigned drivers
• Remove all third-party drivers
• Remove third-party remote control services

But, if all the above resolutions fail to resolve the STOP error message and the data still remains inaccessible, then you need to use go for a clean reinstall of Windows XP. A fresh reinstall erases all the data from the selected partition. In the absence of an up-to-date data backup, the data recovery software can recover all your lost data. Such data recovery tools apply high end scanning algorithms to completely scan, recover and restore the lost data from formatted hard drive partitions.

Stellar Phoenix Windows Data Recovery is the foremost data recovery tool that ensures comprehensive recovery of data. It can recover data from corrupted, deleted, formatted or lost hard drive partitions. The software is compatible with FAT16, FAT32, vFAT, NTFS and NTFS5 file systems. It supports Windows 7, Vista, XP, 2003 and 2000.

k madhav is data recovery expert and doing research on hard drive recovery and data recovery

Article Source: How to Resolve “SYSTEM THREAD EXCEPTION NOT HANDLED” Error Message in Windows

During POST or Power On Self Test, computer BIOS attempts to get information regarding all of the devices attached to your computer system. After examining the processor and primary memory (RAM), it checks for the devices like hard drive, CD ROM etc and shows them with messages on screen like ‘Found Primary Master’ and ‘detecting IDE drives’ etc.

-> POST (Power On Self Test) is the first thing done by BIOS when your computer first boots up. POST is an in-built diagnostic program, which examines the hardware of your computer system to make sure that everything is available and working properly.

Many times, the BIOS of your computer just declines to recognize the hard drive, basically makes it unusable- there is no way in which your operating system will recognize the hard drive if BIOS can not. Let’s observe why all this happens.

The most frequent reason of this problem is a badly connected or loose data cable. You should first ensure that data cable is properly plugged in, both into the motherboard as well as the hard drive.
The same thing goes for the power cable, so you should check it as well. You should also make sure that red lines on data cable and the power cable are contiguous to one another.

Once you have ruled out the cable problems, you need to check out the jumper settings on hard drives. If two hard drives are attached to a port, ensure that one is set as masters and other as slave.
Next, ensure that the hard drive controllers on motherboard are not disabled. These hard drive controllers control the IDE devices and without them BIOS could not detect the hard drives.

If any of the above mentioned methods does not work, you need to search for a data recovery expert to cure your hard drive. It seems that hard drive has some internal problems, which can not be cured without opening it. And you are not recommended to open your hard drive at your own.

Data recovery experts are highly qualified and trained professionals, who know all ins and outs of the hard drive and are able to fix most of the physical hard drive problems. To ensure absolute and safe data recovery, always go for the experienced and reliable data recovery company.

Stellar Information Systems Limited is the most trustworthy and leading data Recovery Company, having more than 15 years of rich experience. Stellar’s personalized data recovery services is offered by highly trained data recovery specialists through Class 100 Clean Rooms.

Williamz Jack work as a freelancer and researcher of Data Recovery & File Recovery Software.

Article Source: What to Do When BIOS Does Not Recognize the Hard Drive?