Ok, I'm looking for any advice here on a problem with my new PC parts.
CPU: Intel Core 2 Duo E6400 (stock HSF)
Mboard: ASUS P5B
PSU: Antec NeoHe 430W
Memory: 1Gb DDR2 PC5400 Corsair Value Select
Graphics: XFX GeForce 7900GS
HD: Maxtor DiamondMax 200Gb SATA
I installed them all and hit the power button to see the CPU fan spin for a second before stopping. Then 4 seconds later it span again for a second before stopping. This continues, all the while the power light illuminates as the thing tries to power up.
I've reset the CMOS, reseated RAM etc etc and now believe the PSU to be either too weak or faulty. After unplugging everything and simply leaving cpu, fan and memory it starts up fine with the CPU fan spinning fine. With the Graphics card plugged in I can see the fan spinning but I'm not getting any display. The moment I plug in the power for the HD (not even connected to the Mobo) the thing drops back into the original state.
To me this suggests that the PSU is too weak but my calculations on the PSU calulator (linked from this forum) fall well within 430W. I appreciate that the 12v rail is the important one but I've no idea how to determine the limits of that and I'd assume this Antec supply would be sufficient. So is this too weak? Faulty? Or could it be something else?
Any help would be appreciated and thanks in advance.
CPU: Intel Core 2 Duo E6400 (stock HSF)
Mboard: ASUS P5B
PSU: Antec NeoHe 430W
Memory: 1Gb DDR2 PC5400 Corsair Value Select
Graphics: XFX GeForce 7900GS
HD: Maxtor DiamondMax 200Gb SATA
I installed them all and hit the power button to see the CPU fan spin for a second before stopping. Then 4 seconds later it span again for a second before stopping. This continues, all the while the power light illuminates as the thing tries to power up.
I've reset the CMOS, reseated RAM etc etc and now believe the PSU to be either too weak or faulty. After unplugging everything and simply leaving cpu, fan and memory it starts up fine with the CPU fan spinning fine. With the Graphics card plugged in I can see the fan spinning but I'm not getting any display. The moment I plug in the power for the HD (not even connected to the Mobo) the thing drops back into the original state.
To me this suggests that the PSU is too weak but my calculations on the PSU calulator (linked from this forum) fall well within 430W. I appreciate that the 12v rail is the important one but I've no idea how to determine the limits of that and I'd assume this Antec supply would be sufficient. So is this too weak? Faulty? Or could it be something else?
Any help would be appreciated and thanks in advance.