The first message says it all! Either your hard drive has died, or become disconnected 
or its controller has died. So bios can't detect it - so obviously no system.

Are you able to get into the bios settings to check stuff out? (and to set boot order 
to CD first, so your 2k install disk will boot).

Probably worth finding the hard drive under one of removable covers on back, disconnected 
and reconnecting it - but suspect you may need a new drive/install if you want to 
rescue this machine.






On Wednesday, September 5, 2007 at 10:37 am, hugh milne wrote:

>I have got another problem with my T21 Thinkpad.  When booting up I get message: 

>Hard Drive Not Installed, I can then get past this and the receive next message: 

>Operating System Not Found.  I have inserted Windows 2000 disc(genuine) but cannot 

>progress and further than this screen, could someone PLEASE help. 

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