Help, bootmgr is missing on Gateway LT20 no cd drive

get a external cdrom drive and have the bios boot from there

inorder to restore it,it is necessary that you have a recovery disc...it generally comes with hp and dell.no idea abt gateway...try that if you have one...else go to your control panel->system restore(or directly search for system restore in windows search).click on restore windows to a previous time...hope this works.

Bootmgr is missing is an error from your system. 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 hard drive interface cables. you can fix it by the following steps:

Firstly, create a bootable CD/USB byWindows Boot GeniusSecondly, set the computer boot from CD/USB after enter into the BIOS menu.Thirdly, start Fix "Bootmgr is missing" with the CD/USB created at the first step.

Source:http://www.windowspasswordsrecovery.com/fix-windows/bootmgr-is-missing.html

If truly formatted - Re-Install Windows.

Bootmgr missing
Boot with a Win 7 disc, and choose Repair Your Computer. Then use Startup Repair option. Type bootrec /fixboot ENTER if you end up at the command prompt. It does the same thing.

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 power and data leads that attach to your hard drive 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 power and data leads that are attached to your drives dvd\cd have secure connections and are not faulty 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

BIOS passwords can be reset in two ways:

1. using software 2. using hardware.

I would first try resetting using software, here are two software apps to reset or retrieve BIOS passwords.

!BIOS - is a PC BIOS toolkit offering password removal/decrypt and BIOS settings modification/backup/restore.
You can download it here:
http://www.syschat.com/download120.html

CmosPwd - Cmos password recovery tools
http://www.syschat.com/download121.html&act=down

Good Luck!

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.

1.Insert the Windows XP CD-ROM into the CD drive, and then restart the computer.
2.Click to select any options that are required to start the computer from the CD drive if you are prompted.
3.When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
4.Press 1 (One) to select windows XP and then hit enter.
5.When you are prompted, type the Administrator password. If the administrator password is blank, just press ENTER.
6.At the command prompt, Type Bootrec /RebuildBcd and then press ENTER.
7.If the Bootrec.exe tool runs successfully, it presents you with an installation path of a Windows directory. To add the entry to the BCD store, type yes. A confirmation message appears that indicates the entry was added successfully. 8.If the Bootrec.exe tool cannot locate any missing Windows installations, you must remove the BCD store, and then you must re-create it. To do this, type the following commands in the order in which they are presented. Press ENTER after each command.
Bcdedit /export C:\BCD_Backup

ren c:\boot\bcd bcd.old

Bootrec /rebuildbcd

1.Restart the computer

Download this Recovery Console BootCD
http://www.thecomputerparamedic.com/files/rc.iso

Burn the image (ISO) to CD.
Boot from the newly created Recovery Console BootCD
Log into the Administrator account (press 1 then press enter)
On the command prompt type: chkdsk c: /r (and then press enter) Note one space after "c:")
Once CheckDisk has finished repairing the faults, type Exit, and then Restart (remove the BootCD)

You need to run the installation CD and run"REPAIR" The bootmgr file is missing from the setup and doing the repair,the computer will take it from the CD again.