I had one doing the same thing and went through all those same steps. Turned out to be the RAM.

I think the AC charges the battery so it would require a battery in order work.

Your problem sounds memory related to me, but without the spare RAM to check it I can't tell you how to verify this.

Not enough watts being provided by the power supply?

Ya like Supishio says, those temps are okay. I suppose you could try removing the old thermal paste and putting some new on if you wanted to.

But you could be right about your power supply giving...

Could be. I would check the temperature of your hardware before spending any money though. I use Asus PC Probe. There's other software out there though to preform the same task.

It also won't be...

:icon_mrgreen: Jealousy commencing :twisted:

First off I am jealous of your new system.

Second I assume the motherboard is still under warranty so the best thing to do would probably be to just send back your P6T Deluxe for a new one. It is...

http://www.daniweb.com/forums/thread166357.html

Same problem not to long ago. May help if you read over it.

Simply, there is something not working with your old memory. Could be the bios...

Windows sounds broken to me. Try loading the Windows installation disk, then repair it that way.

http://www.michaelstevenstech.com/XPrepairinstall.htm#RI

There's some instructions on how to do...

According to the manual orange is not a bad color.

http://support.dell.com/support/edocs/systems/xps410/en/SM_EN/specs.htm