Could be a heat problem. Open case and make sure fans, heat sinks, and 
case filter, if equipped, are relatively free of dust.

Tom Mayer

srs wrote:
> Hello All, The last two times i shut down my pc, upon turning back on, 
> i receive blue screen that said 'system halted' contact server.  it 
> eventually booted. for some time it has shown black screen 
> occasionally alerting me 'that windows did not start successfully, and 
> to choose how i wish to start windows.  sometimes red screen comes up 
> saying'saving data' Any ideas what may be going on?  I am now fearful 
> of shutting down system, so i leave it on.
>
> stephen r stanfield
>
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              The NOSPIN Group is now offering Free PC Tech
                     support at our newest website:
                          http://freepctech.com