I got home from a hard days work and went to boot up the ol puter and after the XP splash screen I get an error reading "lsass.exe failed to load, could not find the fild dnsapi.dll....reinstallation of this will fix problem"

What do I do? I tried a repair with the windows installation cd but it says I don't have any hard drives installed!
Also tried to copy this dnsapi.dll file from a dos boot but it couldn't find the c:\!
If my computer says it can't find HD...but it's getting past the XP splash screen...I'm so perplexed.
Please Help!

Try to boot into safe mode. Start tapping the F8 key after BIOS POST.

First try starting in Last Good Configuration. If that doesn't help try booting into Safe Mode itself & check your Event Viewer for errors. Also check your Device Manager & or Disk Management for your drives.

Event Viewer = Start > Run > eventvwr.msc (post back Source & Event ID)

Device Manager & Disk Management = Rt. click My Computer then click Manage

It doesn't boot in anything from the boot menu
Already tried all that.

Does your BIOS see the Hard drive?

Does your BIOS read your RAM ok?

What type of CD do you have? Full version? OEM recovery? etc.

BIOS doesn't see my HD but the raid utility does
windows cd is the full version i used to install it to the HD

Any previous problems that might give a clue?

When you tried the CD did you try a Repair Install?
As opposed to pressing R for recovery console?

Sorry I am unfamiliar with RAID controllers but do you think that might be a problem?

Im running a maxtor scan on it right now see what that does...will probably have to format the drive

Just checking to make sure you tried the Repair install rather than the Recovery Console. That might make a difference & avoid a full format.

When the "Press any key to boot from CD" message is displayed on your
screen, press a key to start your computer from the Windows XP CD.

When you see the following message displayed on the Welcome to Setup
screen, press ENTER:
To setup Windows XP now, press ENTER.

At this point an option to press R to enter the Recovery Console is
displayed. Do not select this option.

On the Windows XP Licensing Agreement screen, press F8 to agree to the
license agreement.

Make sure that your current installation of Windows XP is selected in
the box, and then press the R key to repair Windows XP.

Follow the instructions on the screen to complete Setup.

I did that and it says it cannot find any drives :/

the computer froze everytime after the winxp splash screen, so i tried doing some things to try and fix it but the BIOS isn't detecting that a HD is there, nor from a dos boot disk. but when i start up the raid controller prog... that detects it, so does a maxtor dos prog i downloaded onto a floppy and ran.......i tried running the winxp installation cd but it says that can't continue because theres no HDs installed.....even after i formatted the thing.......any ideas?!