I had a similiar problem of windows 2000 freezing afer startup.. now I was able to link the problem to Low Memory in my PC... check how memory is installed on client PC....

Secondly check what all unwanted services are running.... Try giving ctrl-alt-delete and wait may be for longer time ... it will clearly display which process is eating into ur comps CPU and memory.....

The best bet would be to install windows 2K with minimum services...(Try uninstalling IIS, FTP, Network Management and other such services.. )


As regards date problem... as mentioned earlier.. it seems clearly a case of BIOS battery change and the problem shall vanish....

KALP