power supply too weak?

[Naythn]

power supply: Antec true 330

specs:
P4 2.26
ASUS P4b533
2 x 256 MB DDR
Seagate Barracuda IV
Seagate 7200.0
DVD ROM
CD-RW
5 x Panaflo L1A 80mm
9700 pro
NIC
Game theater XP

problem:
after leaving the computer off for extended periods of time, it will not post. I get either a blinking cursor or no signal from the video card at all. When I unplug some non-critical items, such as the DVD and secondary HDD, the computer posts and boots fine. I can let it run for a while, turn it off, plug everything in, and it will then post and boot.

The only cause that I can think of is that my power supply is unable to cold boot all of my devices at once. I also remember that in the recent power supply article, the True 330 was mentioned as insufficient for a P4 system.

Any validation of my idea, or additional suggestions are appreciated.

Thanks in advance.

 

[Naythn]

bump

 

[dexvx]

If its a PSU issue, its definitely not because 330W is not enough. Check your voltages, make sure they are within a tolerable limit.

 

[Naythn]

The power monitoring software that came with the motherboard reports that all voltages are well within the limits (most are slightly high).