Monitor Shows No Signal After CPU Starts

[fredpeterson543]

Hello,


I have a problem with my desktop pc. As I turn the pc on, the lights are blinking,fans running, but monitor shows no signal. But I can hear the windows welcome sound from the speaker. I tried to change to different monitor, unplug and plug back the vga, hold down power button. But it still showing no signal on the monitor. Please tell me what to do.


Thanks in advance