Have you attempted a system restore? System Restore
I'd like you to check for the possibility of some sort of virus/rootkit on your system. Try running this rootkit removal tool in safe mode Sophos Anti-Rootkit - Free Rootkit Detection and Removal Tool
Please uninstall any cyberlink software you have for diagnostic purposes. I see it crashing a lot in your system logs.
9/28/2009 3:19:31 AM C:\Windows\system32\DRIVERS\yk62x64.sys
Update your Marvel network drivers from here
7/2/2009 12:45:07 PM C:\Windows\system32\DRIVERS\atikmdag.sys
7/9/2010 4:15:58 PM C:\Windows\system32\DRIVERS\nvlddmkm.sys
I see two different device drivers installed for your video. What type of video card do you have? This is most likely not related to your networking issues but will need to be addressed.
I noticed these three drivers and I can't find anything on them doing a google search. I would like for you to change each of these drivers from .sys to .bak and see if it breaks anything.
After doing the above please let me know the results.