Monitor lights keep blinking

I Just finished installing solaris 10. Now whenever I start it then after the intial screens the message comes "please wait while while logging in on display 0" (something like this).
and after a few seconds all the light on the monitor start blinking.

My monitor is LG studioworks 552V
display adapter nVIDIA 6100 (onboard)

ps: I configured my display in solaris manually (and correctly too)

[mod-the-pc]

Try changing the screen resolution & refresh rate. Probably the current resolution/refresh rate you've entered is not supported by your monitor

I can't change my monitor's resolution from solaris cuz it just starts and the monitor starts blinking.
and yeah! changing the resolution from windows will (and did not, ocourse) not have any effect.