How can I fix a PC that says “Operating system not found” in a black screen?

Question

When I turn on my PC the screen is completely black and says “Operating system not found” and does not respond to anything that I enter. What is the cause of this problem and is it fixable? And if so, how can I fix it?

Answer 1

Check the boot order in the BIOS, the device with the OS (generally the hard drive) may have been removed from the order so the PC isn't looking there.

The hard drive may also have crashed or become corrupted. You may need to replace the drive or reformat and reinstall an OS onto it. Try putting the HDD in another computer and seeing if it works at all.

Answer 2

No Operating System found
If the System stops with 'No Operating System found' error, the issue might due to any of the following:

1. Boot files of the OS is corrupted.

2. Hard Drive is damaged/not detected.

Here are the steps to troubleshoot the issue:

Step 1:

Restart the NB and Reset the BIOS. Check if the Hard Drive is detected in the BIOS. If it is detected in BIOS, save changes and exit, and try booting. If it is not detected, then try HDD Test. Latest Model NBs have HDD Self Test Utility in BIOS. For the Older Models, you can use the Hitachi test Utility.

The Drive Fitness utility available at this link to test the hard drive:

http://www.hgst.com/hdd/support/download.htm

NOTE: The URL mentioned above will take you to a non HP Website. HP does not control and is not responsible for information outside of the HP Web site.

Please refer this link for the detailed instructions for downloading the Drive Fitness Utility:

http://www.hgst.com/hdd/support/dftreadme.htm

NOTE: The URL mentioned above will take you to a non HP Website. HP does not control and is not responsible for information outside of the HP Web site.

For using Bootable CD:

http://www.hitachigst.com/hdd/support/download.htm

NOTE: The URL mentioned above will take you to a non HP Website. HP does not control and is not responsible for information outside of the HP Web site.

NOTE: Burn the ISO image in the CD, and boot the Presario with that CD to perform the Hard Disk Test. The detailed instructions are available in the manual available at the same link. Please download it and follow the instructions.

Step 2:

If the HDD is detected fine, but the system is not booting, then try to start the NB in Safe Mode. If it boots in Safe Mode or gets up to Startup Menu Screen, try the Last Known Good Configuration and System Restore.

Step 3:

If Step 2 fails to work, try Windows XP Repair Installation. If that too fails, then perform a full system restore.

Good Luck and Happy Browsing.........

Answer 3

you most probably lost you partitioning information on your hard drive. Thus all your data is now in limbo. You will need a data recovery program on a bootable disk to recover your data. if there isn't any important data on the drive i would suggest reloading your operating system. The partition will be created again then your disk must be formatted again. Or your hard drive may be gone also.

Answer 4

If you have a restore option on bootup while still in the bios screen, hit the key to restore, otherwise you will need either a restore disk or a windows install disk.

Answer 5

it is MBR (carry close Boot record). you'll go with to obtain an set up disk on your operating equipment (XP/Vista/Win 7), borrow one if attainable, and boot with that (anybody will income this lengthy because it is the same version eg:domicile/professional/effortless/precise fee etc.). note: besides out of your domicile windows CD/DVD, the BIOS settings on your computer must be configured to do this. On start up save tapping both F1, F2, F10, (note that some manufacturers use F10 for equipment fix!) Esc, or Del, to enter the BIOS set-up. seem for "power configuration", "Boot order" or similar and make the CD/DVDchronic the first boot gadget. save settings and go out. Insert the domicile windows CD/DVD into your CD/DVDchronic, and then restart your computer. once you observe the "Press any key besides from CD" message, press a key to commence the computer from the domicile windows CD/DVD. click to go with any ideas that are required to commence the computer from the CD/DVDchronic when you're caused. even as the "Welcome to Setup" demonstrate looks, press 'R' to commence the fix Console. once you've a twin-boot or dissimilar-boot computer, go with the setting up that you go with to get entry to from the fix Console. once you're caused, kind the Administrator password. in case you do not recognize the administrator password, there in all likelihood isn't one so only press enter/go back. on the command instantaneous (C:>), kind fixmbr and press go back/enter. even as the test finishes, re-commence. in case you nonetheless have complications, commence over and kind precise right here urgent enter/go back after each and every line... bcdedit /export C:BCD_Backup ren c:bootbcd bcd.previous bootrec /rebuildbcd Restart the computer. If none of this works, reinstall the OS. ©Techno

Answer 6

Have you checked to see if you have a disk in the 31/2 drive?

Answer 7

the computer cannot find OS in the hard drive. there is only one solution it is to reinstall windows OS on it. let me know if u need more help...