M/B: MSI P4N SLI-FI
Processor: Pentium D 830 Dual Core 3.0 Ghz
2 Ghz (2 x 1 Gb) Ram DDR2 667 Mhz Corsair
Graphics card: eVGA eGeForce 7900 Gtx 512mb
Hard Drive: WD sata 250Gb 16mb buffer
and a Thermaltake Armor Full tower chassis.

So here´s the problem: for this enormous pc i got a 800w Agiler Power supply and when i was running Age of Empires III in full graphics it just turned off!!!. the pc won´t start again. Not really convinced of what it was i bought the same PSU and it turns out that failed again, my pc doesn´t turn on and now i have 2 burnt PSU, so the question is: ¿how can i fix this?????

With regards to your tip #1, I’ve found that silver colored Sharpie’s work well for writing on the black plastic of the power adapter. Putting the label on the wire is a very short term solution — after a few days in a laptop bag and the labels tends to disappear. These days the first thing I do with a new “wall wart” is label it with the device that it services.

Your Tech Weblog points out one of those annoyances of the modern, technological life (My Current Tech Pet Peeve):My current tech pet peeve: gadget power adapters that aren’t properly labeled. An iRiver AC adapter, for instance, should read “iRiver” so…

Some great advice by Ed Bott  on keeping track of the multitude of power supplies we techie people seem to gather.
Personally, rather than add a sticker to the power supply unit itself, I prefer to tag the cables with stickers instead. Power su…