Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Bootmgr missing need help clean install can't access bios or boot sele

29 Oct 2012   #1

Windows 7 ultimate 64bit
Bootmgr missing need help clean install can't access bios or boot sele

I created this account because a) I find this forum very useful and b) this specific problem.

My boss' laptop needed fixing. Its a Sony Vaio (VPCEE21FX). I boot it on and after post I get the 'Operating System not found' message. So I grab my handy dandy windows 7 disk. Boot it from that and get the installation going. It was on the "Expanding Files" part. Now at the same time I was restoring an old xp machine so my eyes weren't glued to the laptop's screen. I looked over and the laptop was off! I checked the power cord it was plugged and everything. I booted it back up and I get 'BOOTMgR is missing press ctrl alt dlt to restart'. I can't access bios or boot menu. I've been restarting it while press f1 f8 f12 and Del, as those are the known keys, but nothing. What do I do? Please help me and thanks in advanced.

My System SpecsSystem Spec
30 Oct 2012   #2

Windows 7 Ultimate x32

First of all, try booting your PC again with all removable media disconnected(eg. USB thumb drives, firewire, e-sata devices.). The only media in the laptop should be the Windows Installation disk. Try booting again.

If you get your computer to boot press F8 at boot. Select the "repair your computer" option at the top of the Advanced Boot Options menu. Now you'll be given a list of options (the first one being "Startup Repair"). Select the "Command Prompt" option and type the following in command prompt: (note these options can be found on the Windows Installation disc as well, just select "repair" when booting from the cd)
After you ran this command(above), run "bootrec/fixmbr" without the quotation marks.
Wait for it to finish and restart your computer and try to install windows again like you usually do. Those commands fix your boot partition's active boot sector as well as the master boot record for the boot partition respectively.

It sounds like your hard drive do not have an active boot primary partition.
Try it and let me know. Fixing the bootmgr is another thing that goes after the fixboot and fixmbr issues.

NOTE: If you do get into the "System Recovery Options" menu (Either from selecting "repair" from the windows installation media OR by pressing f8 at boot and selecting "repair your computer") but you couldn't get the commands to work in command prompt(bootrec/fixboot and bootrec/fixmbr) then try the very first option: "Startup Repair".

If you cannot boot to ANYTING at all, let me know, then we have a bigger problem
My System SpecsSystem Spec
30 Oct 2012   #3
Microsoft MVP


What do you mean you got "the installation going?" Did you actually choose a partition at the drive selection page and begin the install? Or were files only loading the installer?

Boot into BIOS setup to see that HD is detected. Set SATA controller to AHCI to try install. Boot into installer to choose Custom install, delete all partitions and create new as desired, begin install.

If this fails, wipe the HD using Diskpart Clean Command
to try install again.

If you haven't actually started the install and still have Win7 on the HD, it is detected in BIOS and set first to boot (after DVD drive) , then you can also work through these steps for Troubleshooting Windows 7 Failure to Start if you'd like to try repairing it first.

Report back results for more steps.
My System SpecsSystem Spec


 Bootmgr missing need help clean install can't access bios or boot sele

Thread Tools

Similar help and support threads
Thread Forum
BOOTMGR is missing, NO ACCESS to Command Prompt or F2 Boot Assignment
I'm running Windows 7 Ultimate x64 on a Lenovo G580 laptop and got a virus at some point. I decided to format the computer, wipe it clean and reinstall Windows 7U x64 using an ISO on a USB stick. The laptop had no space and the GBs were maxed out and it required some space so I deleted some files...
Installation & Setup
Missing Bootmgr and can't get into BIOS to change Boot order
Hello, I have a Lenovo laptop that is about 4 years old. It was working fine earlier today but when I picked it up to turn it on it was powered down and the message came up saying BOOTMGR is missing Press Ctrl+Alt+Del to restart. I tried to restart and enter the bios to change the boot order...
General Discussion
Can't clean install win 7 (missing BOOTMGR)
So I attempted to install win 8 on a 4gb RAM laptop, setup wouldn't go through, it kept freezing on me. I decided to go back and stay on win 7. So windows is loading the files and TWICE, and it automatically reboots and goes over it again and command prompt comes and says BOOTMGR is missing...
Installation & Setup
can't clean install windows7, bootmgr is missing problem
Hey guys, I have been trying to troubleshoot my PC for a month now with no success when a standoff on my motherboard came loss and my motherboard shorted-out. I already warrentied my motherboard; no difference. Then I went and bought new RAM; also no difference. How do I get passed this stupid...
Installation & Setup
Can't access bios, missing bootmgr msg in win 7
I can't access my bios and get msg missing bootmgr enter ctrl alt delete to restart I can't use my win 7 disk or any other disk to fix this because my computer won't read it, and I can't get into the bios to reset the boot priority. I can't use a zip drive cause the computer won't read that...
Hardware & Devices

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 00:33.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App