Dimension E310 won't re boot

Sounds like you have more basic problems. Does it even start to boot Windows?

What is the color of the power indicator? Is it blinking?

What is the pattern of the diagnostic lights (1-2-3-4 on the front)?

Peter

Then Windows is not the issue. You would not even be able to try to reload it anyway.

Unfortunately, that code is not in the manual. So, I would try the usual:

1. Reseat all cards, cables and RAM
2. If that doesn't help, remove everything that is optional (peripherals, cards, drives, RAM)
3. Try different RAM sticks one at a time
4. Swap in known good RAM, PSU, etc.
5. Try resetting the CMOS settings

It is possible you have a bad motherboard.

Peter

Just connect the monitor to the power supply without any connection to your PC then see if you get the self monitor test?

Try to get into safe mode by constantly pressing F8 on powering up your PC.

Try that.

The machine won't finish POST, so there is no opportunity to boot anything.

Peter

Yes, it has started POST. The 1-2-3-4 diagnostic lights would all be off otherwise. So, you know that something is working.

Peter

The PSU seems to be working. You could measure the voltages if you have a voltmeter. Normally when the PSU is bad the power indicator is amber or blinking amber.

The only way to determine the motherboard is bad is by swapping it or by process of elimination. I know there are vendors that sell Dell compatible motherboards, but I don't know about Newegg. In general, you need a special Dell compatible board.

Peter

They are pretty different: different chipsets and memory, so I don't know how useful it will be.

Peter

I would recheck all of the connections and cables. If that doesn't turn up anything, strip it down to the bare minimum (no cards, no drives). If the light is still amber, it looks like the motherboard is bad. Also, make sure you installed the CPU correctly.

Peter

Didn't you install the CPU when you replaced the motherboard? Instructions are here.

Peter