4600c not operating system error message bootmanager missing

First make sure there are no Disks in any of the drives CD , Floppy and Usb
Computer is booting from a non-bootable source. Computer hard disk drive is not properly setup in BIOS.
Corrupt NTLDR and NTDETECT.COM file.

Misconfiguration with the boot.ini file. Attempting to upgrade from a Windows 95, 98, or ME computer that is using FAT32

New hard disk drive being added. Corrupt boot sector / master boot record. Seriously corrupted version of Windows 2000 or Windows XP. Loose or Faulty IDE/EIDE hard disk drive cable Failing to enable USB keyboard support in the BIOS. Many times this error is caused when the computer is attempting to boot from a non-bootable floppy disk or CDROM First verify that no FLOPPY DISKS or CD is in the computer, unless you are attempting to boot from a diskette Test all power and data leads that attach to your hard drive including IDE,SATA if ita flat 40 pin ribbon type it will be the first to fail. The leads from your MOTHERBOARD TO THE HARD DRIVE make sure they have a secure dust free connections and are not faulty Make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections Computers need power and data to travel through every working device and continue its cycle and have an end so any faulty leads will end up with a computer error

also When NTLDR is missing from your operating system it means that there is a problem with your boot loader, a bootstrap process that begins when you turn on the computer. A missing NTLDR means that your computer cannot boot to the operating system. This issue is only a problem on computers running Windows XP or previous operating systems as Windows 7 and Vista don't utilize NTLDR. Fixing the missing NTLDR is relatively easy so long as you have your installation disc.
Locate your Windows XP/2000 installation disc and place it in your CD/DVD ROM drive. If you don't have this disk, then you cannot proceed further. Restart your computer. When the computer restarts press any key on your keyboard when you are prompted, "Press any key to enter setup." Most computers are configured to boot to another device other than a hard drive. Since the Windows XP/2000 installation disk is bootable, you should see the prompt. However, if you don't see the prompt you may need to change your boot priority in your BIOS. To do so, enter the system BIOS by following the onscreen instructions upon startup. Then navigate to the Boot Priority menu and modify another device, such as a CD-ROM to boot prior to the hard drive. Then reboot your computer. After you have pressed any key, the Windows XP/2000 setup screen will appear. After loading, press the "R" key to repair the Windows installation. The screen will appear black. The computer requests which installation you would like to log in. Generally speaking, press "1" and "Enter." If you have more than one hard drive or more than one partition, the procedure may be different. You must know which hard drive or partition your Windows operating system is installed in. You are subsequently prompted for a password. If you haven't set up one up, you can just leave the query blank and press "Enter." The phrase "c:\WINDOWS>" and a blinking cursor subsequently appear. Type "copy d:\i386\ntldr c:\windows" (without quotes), where "D" is the letter of your CD/DVD ROM drive (your optical drive may be different, especially if you have more than one). Eject the CD from the drive and type "Exit" (without quotes) to restart your computer. The NTLDR file will be copied from the installation disc to your hard drive.
or If you've started your Windows XP computer and you see an error message to the effect that the "NTLDR" file is missing or corrupted, you've probably also noticed that the computer refuses to boot any further. This is because the NTLDR file is an integral part of the boot process and needs to be restored before the boot process can proceed normally.

Insert your Windows XP disc into your computer. Restart the computer and press any key on your keyboard when the message prompting you to do so appears. Press the "R" key to open the Recovery Console and then press "1" and "Enter" in order to select your operating system. Type in your Administrator password (if needed) and press "Enter." Type "copy d:\i386\ntldr c:\" and press "Enter" and then type "copy d:\i386\ntdetect.com c:\" and press "Enter." Restart your computer and let it boot up normally. Since the NTLDR is freshly restored, the computer boots up properly. b> b>

First make sure there are no disks in any of the drives cd floppy and usb Computer is booting from a non-bootable source.

Computer hard disk drive is not properly setup in BIOS.
Corrupt NTLDR and NTDETECT.COM file.

Misconfiguration with the boot.ini file. Attempting to upgrade from a Windows 95, 98, or ME computer that is using FAT32

New hard disk drive being added. Corrupt boot sector / master boot record.

Seriously corrupted version of Windows 2000 or Windows XP.

Loose or Faulty IDE/EIDE hard disk drive cable

Failing to enable USB keyboard support in the BIOS.

Many times this error is caused when the computer is attempting to boot from a non-bootable floppy disk or CDROM First verify that no FLOPPY DISKS or CD is in the computer, unless you are attempting to boot from a diskette

Test all power and data leads that attach to your hard drive including IDE,SATA

if ita flat 40 pin ribbon type it will be the first to fail.

The leads from your MOTHERBOARD TO THE HARD DRIVE make sure they have a

secure dust free connections and are not faulty

Make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections

Computers need power and data to travel through every working device and continue its cycle and have an end so any faulty leads will end up with a computer error

also

When NTLDR is missing from your operating system it means that there is a problem with your boot loader, a bootstrap process that begins when you turn on the computer.

A missing NTLDR means that your computer cannot boot to the operating system.

This issue is only a problem on computers running Windows XP or previous operating systems as Windows 7 and Vista don't utilize NTLDR.

Fixing the missing NTLDR is relatively easy so long as you have your installation disc.

Locate your Windows XP/2000 installation disc and place it in your CD/DVD ROM drive. If you don't have this disk, then you cannot proceed further.

Restart your computer.

When the computer restarts press any key on your keyboard when you are prompted, "Press any key to enter setup."

Most computers are configured to boot to another device other than a hard drive.

Since the Windows XP/2000 installation disk is bootable, you should see the prompt.

However, if you don't see the prompt you may need to change your boot priority in your BIOS. To do so, enter the system BIOS by following the onscreen instructions upon startup.

Then navigate to the Boot Priority menu and modify another device, such as a CD-ROM to boot prior to the hard drive.

Then reboot your computer.

After you have pressed any key, the Windows XP/2000 setup screen will appear.

After loading, press the "R" key to repair the Windows installation.

The screen will appear black.

The computer requests which installation you would like to log in. Generally speaking, press "1" and "Enter."

If you have more than one hard drive or more than one partition, the procedure may be different.

You must know which hard drive or partition your Windows operating system is installed in.

You are subsequently prompted for a password.

If you haven't set up one up, you can just leave the query blank and press "Enter."

The phrase "c:\WINDOWS>" and a blinking cursor subsequently appear.

Type "copy d:\i386\ntldr c:\windows" (without quotes), where "D" is the letter of your CD/DVD ROM drive (your optical drive may be different, especially if you have more than one).

Eject the CD from the drive and type "Exit" (without quotes) to restart your computer.

The NTLDR file will be copied from the installation disc to your hard drive.

or

If you've started your Windows XP computer and you see an error message to the effect that the "NTLDR" file is missing or corrupted, you've probably also noticed that the computer refuses to boot any further.

This is because the NTLDR file is an integral part of the boot process and needs to be restored before the boot process can proceed normally.

Insert your Windows XP disc into your computer.

Restart the computer and press any key on your keyboard when the message prompting you to do so appears.

Press the "R" key to open the Recovery Console and then press "1" and "Enter" in order to select your operating system.

Type in your Administrator password (if needed) and press "Enter."

Type "copy d:\i386\ntldr c:\" and press "Enter" and then type "copy d:\i386\ntdetect.com c:\" and press "Enter."

Restart your computer and let it boot up normally.

Since the NTLDR is freshly restored, the computer boots up properly.

Hope this helps.

There are a number of possible causes for BOOTMGR errors, including the most common "BOOTMGR is missing" error message.

The most common reasons for BOOTMGR errors include corrupt and misconfigured files, hard drive and operating system upgrade issues, corrupt hard drive sectors an outdated BIOS and damaged or loose IDE cables

Anothe reason you might see BOOTMGR errors is if your PC is trying to boott from a hard drive or flash drive that is not properly configured to be booted from. In other words, it's trying to boot from a non-bootable source.

This also would apply to media on an optical drive or floppy drive that you're trying to boot from.

make sure there are no disks in cd floppy usb drives

How to Create a Windows 7 System Repair Disc:
http://www.sevenforums.com/tutorials/2083-system-repair-disc-create.html

"This will show you how to create a Windows 7 system repair disc to use to boot to the system recovery options if you don't have a Windows installation disc, can't find your

Windows installation disc, or can't access the recovery options provided by your computer manufacturer."

or

If you do not have access to either disc: Windows 7 - Repair Disc download
http://neosmart.net/blog/2009/windows-7-system-repair-discs/

a) Insert the Windows 7 System Repair DVD or Installation DVD and reboot.

b) Select the correct keyboard input method and click 'Next'.

Note: If you are using the Windows7 Install DVD then at the 'Install Now' prompt (Do not pick the Install

Now option) instead choose the 'Repair your computer' option located in the lower left of the dispay.

c) The System Repair tool will search for a valid operating system and will report that "Windows found problems with your computer's startup options. Do you want to apply repairs and restart your computer?"

d) Click 'Repair and restart' and reboot again to the Windows 7 System Repair environment.

e) Click 'Next' at the keyboard selection prompt and when the 'System Recovery Options' screen appears verify that the "Use recovery tools that can help fix problems starting Windows" is selected.
Note that on your Dual Boot system there now should be only one operating system listed. Click the 'Next' button.

f) Now from the menu list select the 'Command Prompt' option.

g) At the DOS prompt type the following three commands:

bootrec.exe /fixmbr

bootrec.exe /fixboot (may return an 'Eliment not found' message)

bootrec.exe /RebuildBcd

h) Close the command prompt window and click the 'Startup Repair' option.

i) The repair process may take some time, so wait until the process completes at which point you will see two messages "Windows cannot repair this computer automatically" and "Startup Repair cannot repair this computer automatically".

These messages are the result of the radical changes made by removing the other drive. Ignore the Send/Don't send options.

J) Close this message window by clicking on the X in the upper right corner of the Send/Don't send window. Next click on the 'View advanced options for system recovery and support' option and from the main menu once again click 'Startup Repair'.

This time the repair process may only that a few seconds and when prompted "Startup Repair could not detect a problem", click 'Finish' and run the 'Startup Repair' option one more time, click 'Finish', and then remove the System Repair DVD and click 'Restart'. Reboot the computer.

hope this helps

This message usually indicates that the boot sector is damaged or missing. The boot sector is a region of your hard disk that contains information that is used to load your operating system. If a boot failure is detected when your PC is starting, you may receive this error message.


you can view the below article to troubleshoot.
http://support.microsoft.com/kb/2622803

There are a number of possible causes for BOOTMGR errors, including the most common "BOOTMGR is missing" error message.

The most common reasons for BOOTMGR errors include corrupt and misconfigured files, hard drive and operating system upgrade issues, corrupt hard drive sectors an outdated BIOS and damaged or loose IDE cables

Anothe reason you might see BOOTMGR errors is if your PC is trying to boott from a hard drive or flash drive that is not properly configured to be booted from. In other words, it's trying to boot from a non-bootable source. This also would apply to media on an optical drive or floppy drive that you're trying to boot from.

make sure there are no disks in cd floppy usb drives

Test all leads that attach to your hard drive including electrical extensions IDE,SATA

the leads from your ((MOTHERBOARD TO YOUR HARD DRIVE)) make sure they have a secure dust free connections and are not faulty or just replace them they could be faulty

if its a flat ribbon 40 pin IDE it will be the fist to fail

make sure all leads that are attached to your drives dvd\cd have secure connections and are not faulty even the electrical extensions or just replace them they could be faulty a computer needs data and power to travel through every working device and to continue its cycle and to have an end so any faulty leads will end up with a computer error

also make sure you have set it boot from you hard drive in BIOS

hope this helps

Causes of BOOTMGR ErrorsThere are a number of possible causes for BOOTMGR errors, including the most common "BOOTMGR is missing" error message.

The most common reasons for BOOTMGR errors include corrupt and misconfigured files, hard drive and operating system upgrade issues, corrupt hard drive sectors, an outdated BIOS, and damaged or loose IDE cables.

Another reason you might see BOOTMGR errors is if your PC is trying to boot from a hard drive or flash drive that is not properly configured to be booted from. In other words, it's trying to boot from a non-bootable source. This also would apply to media on an optical drive or floppy drive that you're trying to boot from. Fixes for BOOTMGR Errors

1. Restart the PC. The BOOTMGR error could be a fluke.
   
   
2. Perform a startup repair of Windows. This type of installation should replace any missing or corrupt files, including BOOTMGR. Continue troubleshooting if this does not resolve the issue.
   
   
3. Check your floppy and optical drives for media. Often times, the "BOOTMGR is Missing" error will appear if your PC is trying to boot to a non-bootable floppy disk or CD/DVD.
   
   Note: If you find that this is the cause of your issue and it's happening regularly, you might want to consider changing the boot order in BIOS so the hard drive is listed as the first boot device.
   
   
4. Check the hard drive and other drive settings in BIOS and ensure they are correct. The BIOS configuration tells the computer how to use a drive so incorrect settings can cause problems, including BOOTMGR errors.
   
   Note: There's usually an Auto setting in BIOS for hard disk and optical drive configurations which is usually a safe bet if you're not sure what to do.
   
   
5. Reseat all internal data and power cables. BOOTMGR error messages could be caused by loose or malfunctioning power or controller cables.
   
   Try replacing the PATA or SATA cable if you suspect it might be faulty.
   
   
6. Update your motherboard's BIOS. An outdated BIOS version can sometimes cause the "BOOTMGR is Missing" error.
   
   
7. Perform a clean installation of Windows. This type of installation will completely remove Windows from your PC and install it again from scratch. While this will almost certainly resolve any BOOTMGR errors, it's a time consuming process due to the fact that all of your data must be backed up and then later restored.
   
   If you can't gain access to your files to back them up, understand that you will lose them all if you continue with a clean installation of Windows.
   
   
8. Replace the hard drive and then perform a new installation of Windows. If all else has failed, including the clean installation from the last step, you're most likely facing a hardware issue with your hard drive.

BOOTMGR Errors Apply To BOOTMGR issues apply to Windows 7 and Windows Vista operating systems only. Windows XP does not utilize BOOTMGR. The equivalent function in Windows XP is NTLDR


Whish you the best luck.

The operating system not found error message is one commonly seen by techs and non-technical people alike. If you run into one, it may not be a problem at all. Here's an example:

If you're installing a new operating system to a hard drive or partition, or have just installed a new mother board, chances are you aren't alone. Most of the occurrences of the operating system not found error occur during these processes. In many cases, this is simply BIOS related, and can be changed very quickly (and remedied) during the Boot process. There are a wide variety of occurrences of this error, so if you have recently been "tinkering" or have installed a new operating system, take heart, there are many computer forums on the subject which may be able to point you to an answer.

Another reason why you may get an operating system not found message, is due to a damaged or incorrectly formatted partition. If your computer can't read the partition, then all data stored within that partition cannot be found. This includes your operating system. To solve the problem, you may need to look into partition recovery.

There are instances, however, when the operating system not found error occurs because of file system error, or worse, hard disk drive failure. If this is the case, you may require professional hard disk drive recovery, especially if you were not changing the system details recently, and were just working as normal.
When To Suspect Hard Disk Drive Failure Certainly, there is an explanation for everything, and the operating system not found error can be explained very easily. First, check your floppy disk drive. Is there a disk in it? In cases where this occurs, simply removing the floppy disk will likely solve your problem. Your computer may have been looking for an operating system on the floppy, and as a result, you were handed an error message. Removing the floppy disk should fix your issue.

If there is no floppy disk in your drive, it may be time to check the boot sequence. You can do this in your BIOS. First of all, does your hard drive get detected as the primary hard drive? If it does not, your hard drive may have in fact failed. If it does, move to the Boot Sequence section of the BIOS. If your hard drive does not show up within the first three boot devices, you probably have a problem. Adjust your BIOS accordingly.

Can't Find Hard Disk Drive Either

If you've done these preliminary checks, and are still receiving the operating system not found error, you could be facing hard disk drive failure. If this is the case, remember : DO NOT PANIC. 99 times out of 100, your hard drive's data can be recovered by a professional firm. So rest easy. Then try this test if you have another computer system available.

First, disconnect your hard disk drive from your system, and connect it to a system you know works as the slave drive.

Second, boot up the system and go into Windows explorer. If you can see the drive, you may not have a problem at all, or have one which can be fixed with simple data recovery software tools (Do a search on Google for data recovery software tools for a selection).

If, on the other hand, you cannot see your drive, you may want to consult a professional hard disk drive recovery shop like Hard Disk Recovery Services. Contact us here for a hard disk drive recovery quote, and we will usually be able to diagnose your problem over the phon

Hi,

this is either a faulty dvd drive error message, or you have missing system files on the hard-drive.
The computer is asking you for the ( Media-Software Disk ) that is missing, and is required to start the computer.
Try putting your restore cd, or operating system in the dvd drive when booting the computer.

Mike @ Compurepair.

Do you have a floppy drive in the drive if so remove it. Also turn off your floppy drive or just remove it completely it could be bad sending false info to the main board saying there is floppy drive in the computer. Also try and turn the drive off in the BIOS

Non-System Disk or Disk Error results when the Basic Input/Output System (BIOS) cannot find the boot sector or the master boot record is missing or damaged; i.e. the device does not have bootable media. The BIOS searches drives in the order usually specified in the CMOS Setup. This order is often, but not always, A: (floppy drive), C: (first partition on the hard disk)… The error will occur during startup if the CMOS is set so the BIOS seeks the floppy drive first and a non-bootable (or blank) floppy is in (was left in) the floppy drive. Other causes include:

No bootable partition on a hard disk drive

A defective hard disk drive

The CMOS drive settings (parameters) are not correct for the boot device

Defective floppy

Defective floppy drive

A virus