Unplug everything but the motherboard and see if it boots up and gives any
kind of post message on your monitor.
If it does then connect the items, one at a time and confirm the system
boots, when it stops booting and presenting the post info then you may have
found our what item is loading the SMPS.
However, if it does not boot with just the motherboard connected then either
you have another bad SMPS or the motherboard took a hit and may need
replacing also.
"scenario_dave" wrote in message
oups.com...
I'm having problems that I'm pretty sure are related to my power
supply.

I installed a new dvd burner in my system. The system booted up fine.
It recognized the DVD player and installed it. It told me that I had
to reboot the system to complete the installation. I rebooted it and
it worked fine for about 5 minutes. After about 5 minutes after reboot
the system shut off just like I unplugged the computer. I was standing
near the computer but not actually using it while this happened.

The computer has not booted since. If you push the on switch,
absolutely nothing happens.
I have unpluged and repluged the computer into several different
plugs. I bought a new more powerful power supply and installed it but
the system is still dead. There is a light on the motherboard and
there is a light which goes on and off as I turn the computer on and
off with the dsl plug. So it appears that I am getting power. I
returned the new power supply and got another. And the exact same
thing happens with the 3rd power supply.

I had the exact same systems happened when I got the computer 2 years
ago. The original power supply failed, I installed a second, when I
brought it to a shop they installed a third power supply and told me
that the power supply I purchased was bad.

This all started when I installed a new DVD burner. Since the system
booted, installed the DVD player and then rebooted sucessfully, I doubt
that there was any problems with the DVD installation. I could have
overloaded the old power supply.

Is there anything else I can check?

My motherboard is an ASUS A7n8x-e Deluxe