Windows skips booting from DVD

[EvanB17]

I was trying to duel boot Windows 7 and XP but when the XP installation rebooted I got this message:

"Windows could not start because the following file is missing or corrupt:
<Windows root>\system32\ntoskrnl.exe.
Please re-install a copy of the above file.

Now, I tried to boot into my windows install disc and it just goes to the same error. So I am unable to boot from my hard drive and my dvd drive.

My specs:

Acer Aspire One AOD255-2256
Intel Atom N450 1.66GHz.
1GB DDR2 Ram
160gb Sata HDD

DVD drive is a Memorex 20x DVD+R USB 2.0 External Drive

 

[braddersz]

Boot pc up. And tap f8 key untill you get some options, select repair my computer.

Looking at the error your getting I don't think a start up repair will help.

I think you will need to run sfc /scannow

 

[EvanB17]

I did that and I get Safe Mode options but no option to repair my computer. I select safe mode and I get this "Please select the operating system to start:
Windows XP on F:\

Then when I click on that it gives me the same error.