Bad HD or bad PSU?

[tomsoter2]

Below is my setup. I just added 4th HD (WD320 sata). Strange things happening. They stop when I disconnect HD. Could this setup with 4HDs be too much for my 550W PSU? Or just a bad HD? Or bad PSU? Any guesses or advice on how to proceed?

Logitech 967418-0403 Cordless Desktop LX700 Keyboard and Mouse USB/ PS/2 104keys
Logitech X-530 5.1 Speaker with Subwoofer -box 970114-0403
Monarch Furia Custom W/S w/PCI-E
Antec Performance One P160 ATX Mid-Tower
Antec True Power 550W Power Supply Gold Plated Connectors
Antec 75012 All Clear 120mm SmartCool Thermally Controlled Case fan
MSI MB K8N NEO4 Platinum Athlon64 Nvidia Nforce4 Socket939 FSB800 4DDR400-Dual
AMD Athlon 64 x2 4800 939 Pin ADA4800DAA6CD
AMD Certified Opteron/64/FX Heatsink
Corsair 2GB (2x1GB) TWINX2048-3200PRO - DDR, XMS3200, 128Mx64, non-ECC, 184 DIMM, unbuffered, 3-4-4-8, 64Mx8 DRAMs, PRO series with activity LEDs =
WD 740GD 74 GB SATA 10K Raptor
Western Digital Caviar SE 250 GB SATAII 16MB Cache 7200 RPM (WD2500KS)
Western Digital Caviar SE 320 GB SATAII 16MB Cache 7200 RPM
Western Digital Caviar SE 320 GB SATAII 16MB Cache 7200 RPM
LITE ON CDRW 52X32X52 Beige Retail Box SOHR-5239S
Pioneer DVR-109(beige)16x/4x/16x DVD+RW, 16x/4x/16x DVD-RW, 4x DVD+R DL, 32x/24x/40x CD-RW OEM
Nero 6.6 Suite 1 DVD RW Software
Power DVD XP 6.0 Software
Mitsumi FDD D359M3 1.44 Silver 3.5" Bulk Pack
Enermax High Speed 7 in 1 Card Reader (ECR-A7S)
CREATIVE AUDIGY 2 ZS, 24BIT, ADVANCED HD SOUND RETAIL
BFG Geforce 7800 GTX OC 256mb PCI-E Retail Dual DVI, HD-TV + VIVO
CREATIVE LABS V.92 PCI MODEM
SIIG NN83M012 Firewire 800 1394B 3port 64 bit PCI Adapter for PC and Mac
WINDOWS XP PROFESSIONAL #E85-03013

 

[Ewat]

It's possible that your PSU might not be able to supply enough power for that setup. The only way to know for sure is to disconnect one or two of your old hardrives and try running with the new one.

 

[wgoldfarb]

The easiest way I can think of to rule out a bad drive is to disconnect all of your other drives (except your boot drive, of course ) and try to boot your system with just 2 drives: your boot drive and your new WD320 SATA. If your problems go away with these two drives you will know your new drive is ok,and your problem lies elsewhere.

 

[tomsoter2]

Thank you much.