Hi. I just bought a new toshiba satellite A210/A215 laptop two weeks ago. After about a week of use, something unusual started happening. After I had been using the laptop for awhile (sometimes a couple of minutes, sometimes several hours), the screen suddenly turns black with no warning. It is still on, because I can hear it running. I just can't see anything on the screen and any music or video playing stops. If anyone could help with this that would be great. Thanks!

Get into the power settings (under screen saver) and check the settings for running on battery and running on AC power...

yes, sounds like "standby" after 30 mins or something like that