Sony VGC-RB50 User Guide (primary user manual) User Manual page 96

What can I do if my computer freezes and restarts while I'm watching a DVD or live TV?
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 Monitor 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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