Why The BOOTMGR Goes Missing in Windows® 7
What are the causes of missing BOOTMGR in Windows 7? How does it affect the system performance?
BOOTMGR error message may appear when Windows 7 starts up. "BOOTMGR is missing" error displays shortly after the computer is turned on, immediately after the Power on Self Test (POST) is complete. 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. Another reason you might see BOOTMGR errors is when your PC is trying to boot from hard drive or flash drive that is not properly configured to be booted from.
Following are the causes of BOOTMGR missing in Windows 7:
- Display adapter Windows 7 device driver CD
- To format C from a system repair disc
- Fixes for BOOTMGR errors
Display adapter Windows 7 device driver CD
The device driver installs CD for the 3D Rage Pro AGP 1X 2X Optiplex GX1 Onboard display adapter. These drivers are supplied in a special Windows-friendly format. This means that your PC will automatically install the ATI 3D Rage Pro AGP 1X 2X Optiplex GX1 Onboard Display Adapter Windows 7 driver with hardly any user interaction. The device drivers or the driver software is the interface between the hardware and the operating system or application. A driver classically communicates with the device through the computer bus or communications subsystem to which the hardware connects.
To format C from a system repair disc
One way to format C is by using the format command from the command propt, available from outside of Windows via a System Repair Disc. A System Repair Disc can be created from any working Windows 7 computer but can be used to format C, no matter what operating system is on the C drive. A System Repair Disc does not install Windows 7 and you would not require a product key to use a System Repair Disc. It is easy and it can take from several minutes up to hours to format C using a System Repair Disc.
This type of installation should change any missing or corrupt files, including BOOTMGR. Go on troubleshooting if this does not resolve the issue. Verify your floppy and optical drives for media. Often, the "BOOTMGR is Missing" error would show if your PC is trying to boot to a non-bootable CD/DVD. If you find that this is the cause of your issue and it is happening regularly, you might want to consider changing the boot order in BIOS so the hard drive is listed as the first boot device.
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