computer freezing (hardware problem)

My laptop often stops responding and shuts down suddenly with one of the
following error message:
- error on blue screen telling me to either run memory check and check for
faulty or mismatched memory (don't know how to) or try changing video
adaptors. And the last message is "Beginning dump of physical memory.
Physical memory dump complete"
- color squares unrecognized-able
- or stop at the posting screen
I have to hold down the button to turn it off and have to wait for more than
an hour to get it restarted and worked normally untill it stops again all of
a sudden.
Somebody please help me to figure out what problem my laptop has.

On Sep 2, 3:44 am, sis630/730 <sis630/...@discussions.microsoft.com>
wrote:
> My laptop often stops responding and shuts down suddenly with one of the
> following error message:
> - error on blue screen telling me to either run memory check and check for
> faulty or mismatched memory (don't know how to) or try changing video
> adaptors. And the last message is "Beginning dump of physical memory.
> Physical memory dump complete"
> - color squares unrecognized-able
> - or stop at the posting screen
> I have to hold down the button to turn it off and have to wait for more than
> an hour to get it restarted and worked normally untill it stops again all of
> a sudden.
> Somebody please help me to figure out what problem my laptop has.

Have the laptop's memory (RAM) checked by a "qualified" repair
technician. This is usually a "symtom" of BAD RAM.