I have a Dell E510. several months ago, I got the common power up problem:
cannot start up, sometimes restart automatically.
I search online, change the motherboard battery.
And I plug/unplug the motherboard battery to start machine for 2 month.
Then things got worse and worse, my screen was shaking which is not acceptable.
I open the power supply and find that some capacitors are leaking.
Last week, I order another power supply on line and put it on.
What I get is a black screen with a blinking cursor on top-left.
The 1, 2, 3 green light is on on front panel.
I change back to the original power, but get the same thing.
So what could be the problem now? Mother board? any suggestion?