Motherboard: ASUS P5B-E plus
Memory (4 slots): 2 x Geil PC2-5300, 5CL, 240-pin modules 1GB each (DDR2-667)
Network Card: Netgear WG311v2 Wireless PCI adapter (note: installed with XP drivers, there are no Vista drivers available)
My PC was working 100% fine but lacking power for graphic design work, memory was using hard drive resources. So I bought:
1Gb RAM module - Kingston Value RAM (PC2-5300, 5CL, 240-pin modules DDR2-667)
I installed this in the 3rd slot, 3Gb was recognised in boot and Vista. Since install my network card stopped finding wireless networks entirely. Not one, and I see over 10 normally. The card is fine in device manager, I disabled and re-enabled the device, no joy, I unistalled driver and reinstalled, no joy. In addition, every 5 mins or so my PC stallers/jitters for 1 second. You can hear it when playing music, it jumps and the mouse freezes for literally 1 second. SO... I took the chip out and put it in slot 4, same thing. Now I've removed the chip entirely and I'm back to 100% functionality - no freezing/stalling/jittering and my network card finds networks!
Although the manual for the motherboard and internet resources indicate i do NOT need memory pairs, could this be the issue? Should I spend money and buy another of the same module to make 4 modules, not 3 or do you think the chip is faulty? I find it hard to believe the chip is faulty, it sounds more like incompatibilty rather than faulty, plus it's recognised in boot and Vista as valid. It cannot be a motherboard fault as I tried both slots and same issue. Anyone with experience in this field who can confidently advise?