Most likely you have a problem with the hard drive. However, it is also
possible (much less likely than the first one) that your power supply is
overloaded.

Getting a diagnostic tool for the hard drive manufacturer's web site to
check the drive is a good start. However, if the problem is intermittent the
diagnostic may end up saying everything is ok.
You can also download some application that checks motherboard voltages like
motherboard monitor and see if it goes to low.
http://mbm.livewiredev.com/

My suggestion would be to back up the harddrive and do whatever you want
fast. Be ready to get a new drive.


--
Jon Hildrum
DTS MVP
Jon_Hildrum@msn.com
www.hildrum.com
"lbad" <lbad@discussions.microsoft.com> wrote in message
news:0F91B1D7-73B7-45DA-802F-1EB9D12AE102@microsoft.com...
>I have a problem with hard disc. Sometimes a hear sound like clik-clak in
>the
> hard disc, I suppose disc is trying to read data, and after that computer
> begin to restart. Another problem occur when I start machine and it stops
> booting even when it is in
> the process of reading drives, or in second attempt when winxp is going
> to
> start.
> I guess that there is a problem to hdd drive itself, but anyway I hope
> that I can use any dignostic tool to recover disc.
>
> I appreciate in advance any advice.