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when i try to load windows I get

error loading operating system

if i load a usb rescue disk (hirens boot tools) I can use an option on the menu which says

Boot windows (ntldr)

to jump start the botting process and windows will load. I dont want to keep doing this. The boot flag is set to on when i look at some other tools from the usb rescue disk.

In the rescue disk there is also an option to "fix ntldr missing error", this doesnt work.

Anyone got any suggestionso

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Should be on SuperUser.com – Michael Stum Sep 22 '10 at 23:13
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migrated from stackoverflow.com Sep 22 '10 at 23:41

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3 Answers

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The first things I would try is running a fixmbr. Since the boot disk is getting you into the OS, it seems that the system is having a hard time passing control to the kernel from boot. The system can definitely see your hard disk though.

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This is what I was going to recommend. Most likely the Master Boot Record was corrupted at some point and is no longer pointing to the correct OS partition – Joe Philllips Sep 23 '10 at 4:04
Hi, this worked thanks. – brux Sep 28 '10 at 19:08
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up vote 1 down vote

did you install Windows 7 beforehand? If so, you might have a boot partition, check if that is working correctly.

Also, just to rule out any error possibilities, check BIOS for boot order.

Since you have a rescue disc, first thing you should do, is a backup. Then you might consider a reinstall, just to spare you some hair pulling...

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+1 for mentioning BIOS. This is a common error if you are using more than one hdd. I personally experienced this recently. I don´t know why but my BIOS had set the second disc as bootdis. Ergo: error loading operating system ;-) – Diskilla Sep 23 '10 at 2:04
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up vote 0 down vote

If you're running Windows Vista/7, boot to the Windows disc, bypass the Repair Your Computer screen, open a command prompt and type bootrec /fixmbr.

Edit: I know John just mentioned this but bootrec is required in Vista/7.

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