A friend gave me a Compaq Presario SR2000 / SR2009UK to have a look at, when i fired it up the system would power up but there was no signal going to the monitor and no power to either the keyboard or mouse pluged into the ps2 ports, so i tried a different monitor and used a usb keyboard and mouse both of which are wired not wireless. Fired up the system again but still nothing, Next i tested the powersupply and found that there was a problem with the -5V, so I changed the powersupply and still have the same problem.
Do you think the motherboard is dead or could it be something else??

Oh the motherboard in the pc is a ECS RC410-M