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: missing operating system

23 Apr 2016   #1
capricorn64

windows 7 home premium
 
 
missing operating system

upon starting my computer it informs me of a missing operating system, my system is a dell xps, I have no system image disks. I have purchased a recovery usb from dell, now that does not work. I have also tried a system repair disk and that lists no operating system. I have no idea of what drivers to load and from where.


My System SpecsSystem Spec
.
23 Apr 2016   #2
ThrashZone

Win-7-Pro64bit 7-H-Prem-64bit
 
 

Hi and welcome to SevenForums,
This recommended update has been causing some problems
https://support.microsoft.com/en-us/kb/3133977

https://rog.asus.com/forum/showthrea...mus-VII-Ranger

Not sure if secure boot would be affecting your machine or not but you might review your Bios and advanced boot options for secure boot.
Post some images if you want for the options you show.
My System SpecsSystem Spec
23 Apr 2016   #3
capricorn64

windows 7 home premium
 
 

I have no screenshot other than a black screen that says missing operating system
My System SpecsSystem Spec
.

23 Apr 2016   #4
genetics73

Windows 7 Ultimate 64 bit
 
 

Quote   Quote: Originally Posted by capricorn64 View Post
upon starting my computer it informs me of a missing operating system, my system is a dell xps, I have no system image disks. I have purchased a recovery usb from dell, now that does not work. I have also tried a system repair disk and that lists no operating system. I have no idea of what drivers to load and from where.
I suspect that you have somehow lost Windows boot manager or ruined MBR.

My advice is this: Do not try to load drivers; it's pointless. A very simple way of restoring your machine to life, assuming that it is not a hardware problem and that you have not deleted the system by accident, is as follows: a) using GParted, check the layout of your hard drive, to make sure that you have an empty space available on any of the drives (sda, sdb, etc.). Incidentally, using the same GParted you can see if your Windows files are still present.

b) Using a friend's computer, download and burn a disk with ANY current Linux distribution - Ubuntu, or LinuxMint, for example. Install it, using the "do something else" option at the partitoning stage - choose an empty space on any available disk, and allow the bootloader to be installed to the default device.

Follow prompts and allow installation to proceed. Once it is complete, restart the computer; you should see a boot menu with choices of OS's. Windows should be one of them. Choose the Windows entry to log into - this should bring you to your familiar Windows screen. Again, the assumption is that your Win OS is not damaged and only the boot manager is missing. If you are comfortable with having Windows and Linux side by side on your machine, that's all you need to do.

Otherwise,

If Windows starts, you can rebuild boot and MBR using the system repair disk command line
bootrec /rebuildbcd
bootrec /fixmbr
bootrec /fixboot

Reboot the machine.
When you rebuild Windows MBR, you will no longer have access to Linux.
My System SpecsSystem Spec
23 Apr 2016   #5
capricorn64

windows 7 home premium
 
 

what is and how do I use gparted
My System SpecsSystem Spec
23 Apr 2016   #6
genetics73

Windows 7 Ultimate 64 bit
 
 

GParted is free software that allows one to partition and modify disks regardless of whether there is a functioning OS present. Download it from GParted -- A free application for graphically managing disk device partitions

The iso file gparted-live-0.25.0-3-i686.iso should be burned to a CD - it is not to be installed on the computer. The CD willl be used to start the computer and perform the necessary manipulations.
My System SpecsSystem Spec
23 Apr 2016   #7
capricorn64

windows 7 home premium
 
 

I have downloaded and burned gparted to disk, do I start my pc with the disc in?
My System SpecsSystem Spec
23 Apr 2016   #8
genetics73

Windows 7 Ultimate 64 bit
 
 

Yes; the disk is "live" - it should boot without problem assuming that your BIOS allows booting from CD. The boot order in BIOS is best set to 1-CD; 2-Disk 1; 3-Disk 2...etc. Most computers are set up in this way.
My System SpecsSystem Spec
23 Apr 2016   #9
capricorn64

windows 7 home premium
 
 

it does not boot from the gparted disc
My System SpecsSystem Spec
23 Apr 2016   #10
genetics73

Windows 7 Ultimate 64 bit
 
 

That surprises me - I have never had GParted fail to boot. Does your machine boot from ANY cd at all? Are there any messages on the screen?

By the way, how did you make the GParted disk? did you just copy the downloaded file onto cd, or did you burn it using something like ImgBurn? Just copying the iso file won't do the trick.

I won't be around tonight - try tomorrow.
My System SpecsSystem Spec
Reply

 missing operating system




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
Missing Operating System :(
HI all, I have a laptop and after 1 month i have open my Laptop coz i was on vacation ! Today morning when i have open my laptop everything was ok till windows logo appears and then only black screen i was waiting for desktop to show up but after few minutes a blue screen flash and system got...
General Discussion
Missing operating system" error massage when system starts
Hai, "Missing operating system" massage is coming when i start my system and i am not able to start. I think because , i had given "mark partition as active" option for one hard dive (E) in disk management when last time i opened. it did not have any data. i did not know, this will make any...
General Discussion
missing operating system
help needed after shutting down my pc last night when i started this morning it says "missing operating system" i try to use my windows 7 dvd nothing is working too checked the BIOS if d hard-disk is not connected but is connected help plz
Hardware & Devices
Missing Operating System
Hello This is my first post on the forum so excuse me if i make any mistakes :) Last night, i let my PC on to run a disk defragment and when i woke up i realized that it was crashed, my monitor was on but i couldn't see anything on the screen so i restarted the PC. Then i got the error...
BSOD Help and Support
operating system is missing
Hi everyone. I was trying to do a system restore and I do not have any restore points. That is not the issue. The problem is when I go into advanced system properties I have two c drives. One is active the other one is missing. I have uploaded a picture to illustrate what I am saying. The PC...
Installation & Setup
Missing operating system
Hi all, I have this message on my laptop. Unfortunately I bought it with Widows 7 instaled and no cd or dvd was given to me. I was told I can burn a cd on my own whih I never did. So is there anything I can do in that case? Please help me!
BSOD Help and Support


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 17:34.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App