update video drivers

wrote in message
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Hi,

I've got a refurb 6325cl presario. It has a bad habit of locking up.
When
this happens the screen shrinks to ~80% of normal size and oscillates
wildly. The PC becomes totally locked up - no inputs allowed at all -
keyboard mouse - nothing. I can reset by holding the power button for 10
seconds or unplugging. It reboots fine - no error messages visible. It
happens 4-5 time in an hour and then nothing for a day or two.

Any Ideas - TIA,
Rob