Weird Problem With Gigabyte Mobo, Need Some H

September 13, 2009 at 10:13:36
Specs: Windows XP
Ok so i made this build 2 month ago: Phenom II 940 BE
GA-MA790GP-UD4H (Gigabyte)
2x 1G 1066 Kingstone Hyper X
XFX Geforce 8800 GT 512
320GB caviar WD HD
my old PSU 300W
3Daurora case
my old 19 Viewsonic lcd

The problem: Went yesterday and bought a new 500W OCZ Stealth stream PSU and a 640 GB Caviar Blue HD, after installing the new PSU and HD, every time i try to copy any thing the pc hangs and i have to reboot. The strange thing is that i can access any thing on the 320GB HD with out a problem ex: watching a movie , playing a game, listening to music ect. but, if i try to access anything on the 640 GB drive its extremely slow....whats even more strange is that when i swap the new PSU with the old one, the thing works just fine again.

Failed Attempts to fix:
1- Bought 2 new PSU's 450w and a 600w, both can't copy without hanging.
2- Changed the sata cords and changed positions on the Board
3- Disabled/Enabled cool & quite, fail-safe, optimized defaults in bios
4- Bought a 2000W Voltage Stabilizer.
5-Bought a new 500GB Caviar black HD, same thing slow and hangs when i try to copy.
6- Changed RAM positions.

Any help would be greatly appreciated.

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September 13, 2009 at 11:44:10
Simply buying more & more hardware is an odd (& expense) way of troubleshooting.

You should avoid PSU's with mutiple +12v rails, especially dual +12v rails. If you're going to get a PSU with a multi rail design, make sure it has 3 or more. The reason is that one rail is used exclusively by the CPU so if you only have a 2nd +12v rail, everything else that requires 12v power must pull power from that one rail which is typically only 18A. A PSU with a single +12v rail with high amperage (30A or more) is the way to go.

Power Supply Myths Exposed!

"Disabled/Enabled cool & quite, fail-safe, optimized defaults in bios"

Defaults are never the best settings. They should be considered starting points or fallback points only. The BIOS should be manually configured to match your hardware.

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September 13, 2009 at 17:30:41
Has the new drive been properly partitioned and formatted?
Have you tried the new drive alone?

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September 14, 2009 at 08:10:53
yep, formatted/partitioned 5 times and tried the new drive alone still same problem..once i switch back to the old PSU everything works fine again...

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