Hello.

I got this Dell Desktop PC recently.

It's Pentium 4, and got a SATA Hard Drive.

I hooked it up all properly, but when I start it the CPU fan starts working and the LCD monitor doesnt show anything on the screen. It just keeps blinking its orange light(that's when monitor is on but the PC is off).

Monitor is fine, also tried with a different monitor, but no difference.

Also I tried different CPUs(it's believed that both CPU's I used are 99% dead) but still the monitor won't show anything on the screen.

There are no beeps signaled when the PC starts up.

All I can say is that when you open the case you'll see an orange LED on the motherboard.

What's the problem here?

Thanks.