XP hangs on boot Options

[Guest_entropy_*]

My computer was having issues related to my D: drive. I'm on XP SP2. I have two WD5000AAKS hard drives. I was getting a few different problems, one being the computer would take very long times to boot up completely, sometimes hanging, but usually booting eventually. Also I was getting a BSOD crash referencing a file used in the SATA drivers from Nvidia. I'm using an nForce 7 board. I guess this is a known issue with the nForce drivers and SATA drives having problems. In addition, the D: drive kept running chkdsk upon startup, and occasionally having write errors.

I had thought it might be the disk going bad, but I ran Western Digital's disk utility and it checked out fine.

In trying to fix this, I began by downloading from nVidia the latest drivers and installing them. The first part of the installation program from nVidia deleted my old drivers, and then rebooted the system. I then had a crash on restart, and tried restarting again.

So now it is still running chkdsk on D:. However the chkdsk program completes, but then freezes and never exits. I've tried removing the D: drive (since it boots on C:) as well all other non-essential hardware, and this removed the chkdsk but it still causes the system to freeze. In regular boot mode, I get a black screen. In safe mode it hangs right after loading mup.sys.

I went into the windows recovery console and ran a chkdsk /r D: and waited a few hours. The disk checked fine, and the 'dirty' flag is gone and it is no longer running chkdsk on D:.

However, now even with the D: drive connected XP continues to freeze during the bootup. In regular mode, the Windows splash screen just goes black.

In safe mode, it pauses a bit on mup.sys, then continues and loads fully to the login screen!.... but my keyboard and mouse are disabled and I can't log in. PS2 keyboard and mouse and also tried a USB mouse. Tried disconnecting and reconnecting the devices.

Any help appreciated. I am pretty sure it has something to do with the hard disk drivers. Anybody know how I can get this thing to finish booting with keyboard and mouse so I can try to change the drivers?