i have Dell Optiplex 990.
When I plug power cord to power, PC does not get power, even the LED light of PSU doesn't turn on, I press power button but it still doesn't turn on. But when I press PSU diagnostic button, PSU turns on , PSU LED turns on, CPU Fan also turns on, but there's no display.
What is the problem? Help me.
When I plug power cord to power, PC does not get power, even the LED light of PSU doesn't turn on, I press power button but it still doesn't turn on. But when I press PSU diagnostic button, PSU turns on , PSU LED turns on, CPU Fan also turns on, but there's no display.
What is the problem? Help me.