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I've tried F8 to reboot windows vista with no success. I think I've wiped the whole thing. It keeps displaying "Missing operating system"

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First thing I'd try is diagnostics, (Fn + Power) and see if the HDD fails diagnostics

Posted on Oct 15, 2010


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Laptop has an error message that says boot manager is missing press contrl alt delete to restart computer

If you go to this link it will walk you through the steps of being able to reprogram your boot manager. Its a software issue, not hardware. If you have your windows cd (windows 7 or Vista) you should of got when you bought the computer, it will walk you through all the steps & help you repair it for free.

If you don't have access to the disk another possibility is that you can turn your computer on, while it is turning keep pushing down F8 button continually during start up. That should take you to the internal computer operating system, where you can select safe mode. When it opens you will be asked if you want to continue in safe mode or reboot computer to a date that worked you know of. It will restart it from that point, before you got a virus.
Hope either help, not sure if reboot way will work without a boot manager but worth a try. I've done it when I got infected with a virus on my dell laptop.

Jan 22, 2013 | Toshiba Computers & Internet

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My acer aspire laptop has a black screen with flashing cursor in top left hand corner. How can I fix this?

When you turn off the power and start the reboot process by turning it on do you ever see anything appear on the screen? If so that means there is no problem with the screen and the problem is probably a corrupt or missing boot file or system file. You will need the operating system disc to repair this. If it's Windows XP you will need to boot from the system disk then get to the recovery console (repair option on the windows directory) and run the command: chkdsk /r This will run well over an hour or more and you will notice the percentage of completion going up and down, but let it run to completion. Then reboot and hopefully you're successful. If not, boot from the system disk again, but this time select the option to Install Windows, once you hit F8 to agree to the license windows will check for any already installed windows operating system. When it finds yours highlight it and select R to repair the existing windows operating system. This option will preserve all your documents, music, pictures, videos and any programs you have.

If windows Vista load the system disk and let it try to fix the problem by running system repair. If it can't repair it then you can get to the recovery console and type "chkdsk /r" and let it run. When finished, try rebooting. If not successful then unless you are technically inclined you will need to seek out a repairman because a good repairman will save your documents, music and pictures then reload your vista operating system.

Mar 14, 2012 | Acer Computers & Internet

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Several attempts to install windows 2003 on dell optiplex 780 have been unsuccessful. all i get each time is a blue screen.

Windows 2003? There is no operating system called "Windows 2003". There is Windows 95, Windows 98, Windows ME, Windows 2000, Windows Milenium, Win Xp, Win Vista, Windows 7 ect. But no Windows 2003.

If you are trying to install an operating system on a Dell computer, put the disk in the cd or dvd drive on the pc and close it. Then turn the computer off and reboot it with the disk in the drive. After the computer reboots, it should recognize the disk in the drive and bring up the installation process automatically. Sometimes you have to reboot the computer 3 - 4 times in a row with the disk in the drive in order to get it to recognize the software and boot from that drive.

If the Dell does not have an operating system on it and you are trying to install windows from a disk, it may not auto recognize the program in the drive and the above instructions will not work. If this is the case, then you need to put the disk in the drive of the pc and restart/reboot it - and watch the computer screen as the pc restarts - look at the lower left side of the screen during the boot up process to see what keys you need to press to enter startup mode, or get into the bios system of the computer. when you boot up a pc, it will display the keys you need to press on the screen for a brief few seconds before the "windows" screen appears and it completes the start up. If the pc is running windows xp, the command keys to press during start up might be F2 - F8 or "press the delete key". The commands can differ depending on which version of windows you are using - and they can also vary by brand of pc too.

You need to put the pc into "safe mode" or get into the Bios system or restore area to install windows if the computer does not already have an operating system installed on it.

To put the pc into safe mode or get into the Bios System, you need to press the right keys during the start up - and do this before a picture appears on the screen or the windows display comes up.

Put the disk in the drive and reboot the pc. As soon as it starts to reboot, keep pressing the F8 key. If the pc does not go into Bios or say "loading safe mode" then immediately restart the pc and try again. Sometimes it takes 3 or 4 attempts to make this happen. If the F8 command does not work after 4 tries, then try the F2 key. After four tries if that does not work - try pressing the delete key.

If you can get the pc into the bios system - use the arrow keys on the keyboard to scroll through the options and find the prompt that says "boot order". change the boot order to boot from the Cd or Dvd drive instead of the hard drive. Save after changing this setting and reboot the pc with the disk in the drive and it should boot from that disk to install the operating system. Try rebooting 2 or 3 times after changing the boot order to the disk drive to get it to boot from the cd. Then just follow the prompts to install the operating system and your done!

Jul 07, 2011 | Computers & Internet

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When I Turn On My Inspiron 6400 It Comes Up With: BOOTMGR is missing Press Ctrl+Alt+Del To Restart But When I Do The Same Thing Happens Again. Please Help

Hi it seems that your Operating System is corrupted, I can give you a link of step by step ways on how to recover it because for sure you got tons of important stuff saved in your computer but you would need you Operating System CD to do this step, but theres still a way for you to find out if "Repair your computer" is present in " Windows Advance Option,how? Just restart your computer and during its booting process , keep tapping on F8 until you will see the "Windows Advance Option" where you can find " Repair you computer" (Note: Sometimes its not there as your option, if that happens you will have no choice but to use your Operating Disc) then you would need this link as your guide... I hope this will help. (-_-)

Jul 06, 2011 | Dell Inspiron 6400 Notebook

2 Answers

HP DV4 displays only a blue screen running vista

Shutdown the computer,disconnect external peripherials.
Turn on the computer and hit F8 key as soon as you restart the computer
You will get the windows advance options menu.
Select the Safe mode option and hit enter.
If the computer boots in safe mode, do a system restore to previous date.
If computer restore then issue is resolved.
If still unable to boot in safe mode.
Ran a harddrive diagnostic.If harddrive test passes. If harddrive test fails replace harddrive.
Boot the system using the windows xp or vista operating system disk. Try to repair the OS then reboot the system and check.
If still unable to boot possible issue with corrupt operating system.
Reinstall Operating system. / Recover System . Good Luck.

Aug 27, 2009 | HP Pavilion dv4-1140go Laptop

2 Answers

Laptop restarts over and over

Is it Win XP or Vista? hit F8 and see if you can get into Safe Mode, if you can goto start , run and type msconfig, disable all and reboot.

If you cant get into to safe mode, hit F8 when computer turns on and scroll to Last Known Good Configuration. see if lets you in.
If you are running Win XP and none of that works. You will have to run your XP CD and do an OS repair, just load the XP CD at boot when setup starts hit ( Enter F8 then R) let it do its thing. Hope this helps Good Luck.

Jul 24, 2009 | Computers & Internet

1 Answer

Laptop stuck on screen "Windows is resuming"

First determine if windows is really hung.

Restart the laptop and keep pressing the F8 function key. You will get a menu. Try the safe mode option by selecting it with arrow keys and pressing enter. Click on Yes when it asks the question.

If Windows runs okay in safe mode, reboot and try starting normally without pressing any keys). If again it won't start, then go back to safe mode and when asked the Yes/No question, reply with a No and it will ask you to do a system restore. Just select a recent restore point say one or 2 days ago or the most recent and select restore. It will take some time and reboot the system. Now everything should be hopefully okay.


Jan 03, 2009 | Microsoft Windows Vista Home Premium with...

1 Answer

Problems with loading windows vista home premium

Try rebooting with LAST KNOWN GOOD CONFIGURATION by restarting your computer and pressing f8 until the black and white safemode options screen comes up. There you will see a number of options, one which says last known good configuration.

If that doesn't work, you will need to repair your windows installation with the windows disk.

Nov 16, 2008 | Microsoft Windows Vista Home Premium with...

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