Jul 30, 2012 But yeah, bootloader could be placed in the mbr of the other drive. Iirc, Windows 7 creates a 100MB hidden partition on the primary drive during setup. That's likely where the bootloader is. WTF, I never gave it permission to partition the other drive and do this. Jun 20, 2016 As you have mentioned that you are able to boot into the second Windows 7 from boot manager screen, I would suggest you to follow below steps to disable/remove the other operating system: 1. Press “Windows key + R”, type “msconfig” in the run box and click OK. Go to the boot tab, now you might see two Windows 7 operating system. I had Windows 7 set as the primary OS, so I was not without a system. Modifying the Windows 7 boot loader with the Boot Configuration Data Editor tool. And is currently the IT Manager for a.
If your Windows PC is throwing an error message at you before it even begins to load Windows, it’s possible that the boot sector on your system partition is damaged, corrupted, or has missing files. Here’s how to troubleshoot those problems.
What Are the Boot Sector and Master Boot Record?
RELATED:What’s the Difference Between GPT and MBR When Partitioning a Drive?
The boot sector is a small section at the beginning of a hard drive that gets created whenever you format the drive. The boot sector contains some code and data that helps BIOS hand off control of the startup process to Windows. The boot sector also hosts the Master Boot Record (MBR), which contains the disk signature, partition table for the disk, and a small bit of code called the master boot code.
When a PC starts, the initial power-on routine is handled by the BIOS. The BIOS then loads the master boot code into the PC’s RAM and hands off the startup processes to it. The master boot code scans the partition table, determines the active partition, loads a copy of the boot sector into the PC’s RAM, and hands off the startup process to that code. It’s this boot strapping process that allows the initial bits of the Windows code to start loading.
The boot sector can experience the same types of problems as any other part of your hard drive—missing files, corrupted files, and even physical damage. When the boot loader process fails, it will happen after you see the BIOS information but before Windows actually begins to load. You’ll usually see error messages like the following:
- Error loading operating system
- Missing operating system
- Reboot and select proper boot device
- Invalid partition table
- Bootmgr is missing
- FATAL: No bootable medium found! System halted.
If you are seeing any of these messages, it means you won’t be able to start Windows and will have to use the Windows Recovery Environment to do your troubleshooting. We’re here to walk you through that.
Note: If your PC starts to load Windows, but then fails, then the bootloader is not the problem. Instead, you should try starting the PC in Safe Mode and troubleshooting from there. Performing a System Restore would be a good place to start.
Boot From the Windows Installation Media or Recovery Partition
The first thing you’ll need to do is start your PC into the Windows Recovery Environment. It’s possible that your PC has a special recovery partition that will allow you to start the Windows Recovery Environment without needing a physical disc. How you do that varies with what brand of PC you own, but you’ll often see a message during startup telling you what key to press to start recovery and repair. If your PC doesn’t have a recovery partition—or you’re just not sure how to access it—you can also start your PC using a DVD or USB with the Windows installer on it.
If you don’t have an installation disc, you’ll have to use another PC to download a copy of Windows. You can then create a DVD or USB install disc that you can use to boot your own PC. And by the way, if your PC is still operational you might want to take the precautionary step of creating a recovery drive or system repair disc that you can use in the future.
If you start your PC using an installation disc, click through until you see the initial Windows installation screen and then click the “Repair your computer” link instead of starting an installation. If you’re starting from a recovery partition or repair disc, the screens might look a little different, but you’ll end up at the same options we’re going to cover here. Matrix path of neo game.
Windows will then load the recovery environment. On the first page, click the “Troubleshoot” option.
The Advanced Options page will appear next and it contains the options we’ll be discussing in the next couple of sections.
Note that if you’re using Windows 7, the screens may look a bit different. You’ll see most of the same options, though, including the ones we’re going to cover next.
Repair Startup Automatically
In most cases, you should let Windows try to automatically repair startup. Not only will it attempt to fix the Master Boot Record or recreate the boot sector, it will scan for and try to fix other common startup problems as well. On the Advanced Options page, click “Startup Repair.”
The next page displays all operating systems detected on your PC—even if you only have one installed. Click the operating system you want to repair.
Windows will begin checking for startup problems and attempting repairs.
When the process is complete, Windows will let you know whether the repairs were successful. Either way, you’ll be given the option to restart your PC or return to the Advanced Options page.
If Windows cannot automatically repair your PC, you can always try repairing the Master Boot Record or rebuilding the boot sector manually from the Command Prompt. It’s unlikely it will work if the automatic repair didn’t, since these commands are performed as part of the automatic repair process, but it won’t hurt to try.
Repair the Master Boot Record from the Command Prompt
If you prefer handling things yourself—or an automatic repair failed—and you’re pretty sure that the problem is with your Master Boot Record or boot sector, you can also drop to the Command Prompt for a quick fix. On the Advanced Options page, click “Command Prompt.”
Once you’re at the Command Prompt, you’ll be using the
bootrec
command, and there are a couple of options that can be useful in fixing bootloader errors.To restore the Master Boot Record, type the following command and hit Enter. This command writes a new Windows-compatible Master Boot Record (based on whatever version of Windows you’re using) to the boot sector without overwriting the existing partition table. It’s a good start for repairing boot loader errors resulting from file corruption.
To write a whole new boot sector to the system partition instead, type the following command and hit Enter. This option does overwrite the current partition table and thus can sometimes cause issues if you’re set up to boot to multiple operating systems. It won’t overwrite any data on your actual partitions, but you may need to reconfigure your multi-boot options after using this command. This command is useful when you suspect your boot sector may have been overwritten by another operating system installation or malware, or if you suspect the boot sector itself is damaged.
And of course, the bootrec tool also offers other more advanced options. You can always type
bootrec /?
to see more options for and get help with the command.Steps to Take After Recovery
After you’ve successfully repaired your PC and are able to start Windows, we highly recommend going ahead and performing a couple of other steps. First, run the Check Disk utility to scan the integrity of your file system and hard disk. It’s always possible that your bootloader error stemmed from physical problems with your hard disk.
Second, use the System File Checker utility to scan for and fix any corrupted system files. It’s unlikely that using the steps we’ve talked about will cause problems with system files, but it is possible. And it’s a very easy thing to check on and fix.
While boot loader errors can be a bit intimidating when they pop up—mostly because of how little information you’re given when they happen—they are reasonably easy to repair. You just have to know what to look out for and have a recovery solution ready to load.
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Hi Alan,
With the issue description, I understand that you are experiencing issues in booting up your Windows 7 machine and getting boot manager screen after every reboot. I will certainly help you in fixing this problem.
I would like to inform you that this issue might occur because of corruption in master boot record. Let’s follow below mentioned steps and check if that helps:
Method 1:Startup Repair from the Windows Recovery Environment
1. Insert the Windows 7 installation disc into the disc drive, and then start the computer.
2. Press a key when the message indicating 'Press any key to boot from CD or DVD …'. appears.
3. Select a language, a time and currency, and a keyboard or input method, and then clickNext.
4. Click Repair your computer.
5. In the System Recovery Options dialog box, choose the drive of your Windows installation and click Next.
6. At theSystem Recovery Options Dialog Box, click onRepair your computer.
7. Click the operating system that you want to repair, and then clickNext.
8. In the System Recovery Options dialog box, click Startup Repair.
Refer the following link for more information:
To know more about “Startup Repair” visit the following link:
Method 2: Rebuild BCD using the Bootrec.exe tool
To run the Bootrec.exe tool, you must start Windows RE. To do this, follow these steps:
1. Put the Windows Vista or Windows 7 installation disc in the disc drive, and then start the computer.
2. Press a key when you are prompted. Select a language, a time, a currency, a keyboard or an input method, and then click Next.
3. Click Repair your computer.
4. Click the operating system that you want to repair, and then click Next.
5. In the System Recovery Options dialog box, click Command Prompt.
6. Type Bootrec.exe, and then press ENTER.
Refer the following link for more information:
2. Press a key when you are prompted. Select a language, a time, a currency, a keyboard or an input method, and then click Next.
3. Click Repair your computer.
4. Click the operating system that you want to repair, and then click Next.
5. In the System Recovery Options dialog box, click Command Prompt.
6. Type Bootrec.exe, and then press ENTER.
Refer the following link for more information:
How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows
http://support.microsoft.com/kb/927392
http://support.microsoft.com/kb/927392
Method 3: Use the Windows Recovery Environment to run System Restore
1. Insert the Windows 7 installation disc into the disc drive, and then start the computer.
2. Press a key when the message indicating 'Press any key to boot from CD or DVD“. appears.
3. Select a language, a time and currency, and a keyboard or input method, and then click Next.
4. Click Repair your computer.
5. In the System Recovery Options dialog box, choose the drive of your Windows installation and click Next
6. At the System Recovery Options Dialog Box, click on System Restore.
7. Follow the System Restore Wizard instruction as usual and choose the appropriate restore point.
8. Click Finish to restore the system.
Windows 7 Boot Manager Download
To know more about “System Restore” visit the following link:
Note: When you use System Restore to restore the computer to a previous state, programs and updates that you installed are removed.
Windows 7 Boot Manager Repair
Hope this information is helpful. Please write back to us if you need any further assistance, we'll be glad to assist you.