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W2K - AMD Sempron - 100% processor hangup - I'm clueless

Hello all -

I am putting together a home built. Brand new Sempron processor, ecs motherboard (AM2 socket), DDR2 RAM, new Maxtor HDD, W2K OS.

I booted via my old W2K disk, used the W2K disk to format and partition the hard drive and install of W2K went fine. THEN.......

started hitting Microsoft update for the laborious update process, got SP 4 installed, etc., but a few of the updates would hang up the processor at 100% usage after a few seconds of the install update process. Specifically, the following updates:

KB 923689
KB 925398
KB 917734

(One of these was for media player 6, which I don't understand, since I have media player 9 installed)

Now....ONLY OCCASIONALLY....the 100% CPU usage will hang up the computer at times with the occasional glitch allowing a click or two to get through every 20 seconds or so. A reboot usually solves the problem.

When this happens, task manager shows winmgt.exe and csrss.exe as the main things apparently using cpu cycles.

any thought or pointers as to what is going on here?
Many Thanks in advance!

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