Z87 GD 65 Gaming - Enable Ethernet and system freezes

Question

Guys
New build
Z87 GD65 Gaming
OCZ Nocti mSATA 128Gb
i5 4670k
Crucial M4 128Gb
Crucial Ballistix 1600 x 16Gb
Win 7 x64
Things went ok for the first couple of days using my old build on the M4 SSD I just had to add the new drivers.
Then system started freezing as the desktop was loading, nothing worked so a power cycle was required. Got progressively worse. Rebuilt on Crucial M4 and all ok until Ethernet drivers were added and more instant freezes.
From safe mode I disabled the NIC and all booted up with no issues, enabled NIC and there was an instant freeze again.
Cleaned the killer drivers out using the cleaner and reinstalled the stickied  drivers, still froze.
Several steps left to test - I'll install onto a SATA HD to take out the SSD issues.
I'll install a standalone intel NIC and see what happens?
Other than that looks like its a bad board  Will see what SCANS returns policy is like
Cheers
Simon
Found out that there were issues with freezing with Crucial SSD's so rebuild onto the mSATA and all looked ok, until I added the Ethernet drivers and the freeze occurred again. Rebuilt

Answer 1

Just thought I'd update my 'fix' - I hate it in forums when you don't see what the fix was!!
After several rebuilds I noticed that my Win 7 OS DVD was an old one and didn't have SP1!!! When I reolved that and only used the bare ethernet drivers I had no more NIC issues.
After about a week my ASUS 6850 stopped working, no display not even BIOS, so started using the internal GPU. I decided to try properly cleaning the AMD drivers out and re installing and to my relief everything now works
Not the smoothest build I've ever done. Never used MSI boards before always been an ASUS user, but not impressed with supplied software for the boards.
cheers
Simon