When I press start the power and hard drive neons show and the fan starts, but then stops. After 3 - 4 starts the start holds and no further problems. I have checked the motherboard power connector and it is making a good connection. Clock is keeping good time so I assume the motherboard battery is still good. Any thoughts on checks to make please?
Terry, On pressing START both Power supply fan and processor fan start, and then stop. I am thinking power supply too, but don't know what terminals on the motherboard connector activate the power supply, and don't know the circuit to the power supply. Is there any way to check the power supply independently?
As the problem is getting a first time start I agree that the start button is suspect, but I have checked it makes positive contact, and breaks positivly on release, so I think I have eliminated the start button. Then on getting a good start the power supply continues with no problems. The fault I want to identify is why will the power supply not start on the first press of the START button.
New power supply fitted and problem solved. A point about connections from a power supply. The old supply had all WHITE connectors for C/D's, Floppy and Hard Drive, but the Hard Drive needed a BLACK SATA connection, and an adapter cable was needed to give the SATA connection. The new drive had only 2 WHITE connectors and 2 BLACK SATA connectors, so I was O.K. The connectors for processor Fan and Floppy were as normal. So if purchasing a Power Supply make sure the connectors on the Power Supply suit your Hard Drive. I will mark resolved soon in case there are some more comments.