Windows XP won't boot up

[anth7149]

My system will not boot up, or am unable to reload windows or restore
original system. It states that It is unable to find this file:

<windows root>\system32\ntoskrnl.exe

how do I restore this file?

system states that I should contact manufacturer.

 

[Xandros]

You need a Windows XP CD. Access the Recovery Console and follow this advice
here: http://www.computerhope.com/issues/ch000648.htm

You should also understand that this error can be hardware related. You
should run a scan on your hard drive. Usually hard drive manufacturer's have
utility programs that can do this. Generally you visit their site and
download the program.

 

[Pegasus \(MVP\)]

My system will not boot up, or am unable to reload windows or restore
original system. It states that It is unable to find this file:

<windows root>\system32\ntoskrnl.exe

how do I restore this file?

system states that I should contact manufacturer.

The cure for this problem can be very simple or quite complex.
What is the recent history of the machine? New hardware?
Software? Changes?