Well I wrote a post last nite that I was getting ready toboot my new system up well it booted fine temps of my 820d said it was 35 at idle of couse windows came up and said to many hardware changes need to re activate so I thought I would do that this morning try to boot this morning power comes on but it wont post My last system did this to me the same results turns on but monitor light just blinks no post beep when I wrote about this on my last system most thought is was my bios but if this is doing it could it be my power supply I have a ultra xconnect2 550w been fine for about 5 moths any input would be great I have a my old 64 with 12v connector 420 watt it has been good for years but is it enough to power this pentium d 820?