Please Help! Multiple BSODs!

After doing the RMA on my video card there are no problems with it. Here are the latest 2 dumps.

One was a stop error 124 which. from what i read, is associated with a low power or fluctuation in power supplied to the CPU. Is this correct? Is there anything I can do to remedy this problem, or would I just need to get a better power supply that would be more stable?

The second code was a 1E stop error caused by nwifi.sys which is Windows native wifi driver. Is this a necessary driver since I am using wifi? My wifi card has its own drivers, so can I just disable the native windows one or is it necessary to handle a wifi card?

The crashes seem to somehow correlate to cold start ups and waking up from sleep. Once my pc is up and running it runs rather smoothly, but the crashes occur typically within the first couple minutes. Thanks for any help.
 

My Computer

Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Enterprise x64
CPU
AMD Phenom II x4 965 Black Edition
Motherboard
ASUS M4A79XTD EVO
Memory
KINGSTON ValueRAM 4GB KVR1333D3K2/4GR
Graphics Card(s)
ASUS EAH4890
Monitor(s) Displays
ASUS VH202T / ViewSonic VA912b
Hard Drives
640GB WD 7200
PSU
OCZ ModXStream Pro OCZ600MXSP 600W
Case
Antec Nine Hundred
Any ideas?
 

My Computer

Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Enterprise x64
CPU
AMD Phenom II x4 965 Black Edition
Motherboard
ASUS M4A79XTD EVO
Memory
KINGSTON ValueRAM 4GB KVR1333D3K2/4GR
Graphics Card(s)
ASUS EAH4890
Monitor(s) Displays
ASUS VH202T / ViewSonic VA912b
Hard Drives
640GB WD 7200
PSU
OCZ ModXStream Pro OCZ600MXSP 600W
Case
Antec Nine Hundred
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