T43p-blue screen after changing display settings

Display turned blue after changing resolution obviously to some wrong settings, how to revert the process when cannot see anything but the start up sequence?

go into the safe mode and change the resolution, or at least reinstall the driver. Press F8 during initial startup of the laptop. 
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

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