Compaq Presario 4660 Won't Boot

Hello
Dinosaur Compaq Presario 4660 on windows 98.
Won't boot. The power is on, but there's no beep.
The hard drive doesn't seem to spin, but there is power to all the peripherals.

Thoughts on a solution? I took off the cover and couldn't find a bad connection.

Thanks
Shannon

 

Sounds like its not even reaching POST (Power On Self Test)

To start to boot, the power supply must reach the correct state and issue a Power_OK signal to the motherboard, within a preset time (about 0.7 seconds).

This is detected by the motherboard which resets the CPU and allows the boot process to start.

But, if there is a problem with the CPU or motherboard, the reset will not happen either.

So the problem could still be the PSU, or the CPU, or the motherboard, or 1500 other bits.

There is no easy way to find the problem apart from substitution by replacement at the end of the day. The HDD not spinning up does tend to point to Power Supply Unit first though.