Sony VGC-RA810G VAIO User Manual page 219

My computer freezes and restarts while I'm watching a DVD or live TV. What do I do?
Verify that the monitor refresh rate is set to 60 Hz, using the following steps:
1.
Right-click on the desktop, and click Properties from the shortcut menu.
The Display Properties window appears.
2.
Click the Settings tab, and then click Advanced.
3.
Click the Monitors tab, and in the Monitor settings box, confirm the screen refresh rate is set to 60 Hertz.
4.
If the refresh rate is not set to 60 Hz, click the drop-down arrow, and select 60 Hertz.
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