Missing operating system, but boot to HD! Why

December 31, 2010 at 16:11:21
Specs: Windows XP
My hard drive failed, put in new hard drive, reinstalled windows XP pro, everything was working fine. Restart, or turn off computer and booted to windows. I went to the bios to check to make sure num lock was on, didnt change anything in the bios, exited the bios and now get this error message of missing operating system.

So, I erased the hd and did everything again! IT was fine until I just looked into the bios without changes. I can boot to the HD by interrupting with enter and F12. It cant be the new hard drive, it was working until I looked at bios (no changes made) and able to go to hard drive and it boots. What is happening!


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#1
December 31, 2010 at 16:34:00
I know from experience that you can install Windows by booting from the CD and running Setup, and Setup will reboot the computer several times and complete successfully, even if the Boot Order or similar settings are wrong.
You don't get the "operating system not found" or similar message until you boot after Setup is finished

Check the Boot Order or similar settings in your bios Setup.

E.g.

They should be
removable drive, or floppy drive
CD-rom or similar
Hard drive
network boot or similar

Also....
with some bioses, if removable drive (or USB drive) or similar is first or before hard drive in that list, the bios may attempt to boot from a USB external drive or a USB flash drive. A USB flash drive is never bootable unless you follow a procedure to make it bootable - if it's not bootable you will get the "operating system not found" or similar message and the bios will not attempt to boot from anything else in the Boot Order or similar list.
Try unplugging any USB flash drives before booting.


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#2
December 31, 2010 at 17:21:48
Well it was as simple as unplugging the USB flash drives. Thank you thank you, especially on New Years Eve.

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#3
January 1, 2011 at 07:49:45
We're glad to hear you found a solution.
Happy 2011 !

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