Antec Phantom 350 Purchased 1/19/2005 from Buy.com
Serial Number to be entered (I am elsewhere now)
A64 S754 1.8Ghz (2800+)
MSI k8n, nforce 3
3 Sticks, 1gb+2*512mb.
PCI card: revolution sound card
Nexus 120mm intake at bottom of case
Nexus 120mm out in middle of case (above agp slots)
WD Raptor 74gb
System runs 24 hours a day, it's probably on about 70% of the time.
Needed more storage. Added new 250gb Hitachi.
* It runs in CHS Mode instead of LBA. Setting it to LBA manually does not help. Jumpers are set as standard, nothing funky there.
* System started rebooting. Problems booting into windows XP. BSOD's.
* Something faulty in hardware, causing shorts.
* PSU failing.
Last night, was copying contents from 160GB drive to the new 250GB. Then I started using the old 300GB, system powered off. Note: 300GB drive was sleeping/suspending.
My guess is waking up the drive uses up the max power draw and using this last drive pushed it over the top. Will do further tests today.
* bad drivers, other software problems. Eliminated this problem because I decided to reinstall Windows (been a bit, it's nice to get a fresh copy).
* Shorts in the motherboard, loose cables, etc. I removed all cables and motherboard from case and rescrewed everything in nicely. No help.
MSI forum had a nice excel calculator for my motherboard. (MSI Neo Platinum K8N)
Ran the detailed spreadsheet and it lists usage:
17 Amps * 3.3v + 22.3 Amps * 5v + 20.8 Amps * 12v
Antec specifications for the Phantom 350 are
28 Amps *3.3v + 30A * 5v + 16A 12v1 + 18A 12v2.
Seems well above the specifications thought the 5 volt line is a bit close.
Workaround: Unplugged one of the hard drives (any of the data drives) and the system boots fine. This seems to indicate power problems. Will confirm by checking unpluging each in turn and trying to boot.