You have allocated IRQ, and a valid dhcp lease. Is this while the adapter is disabled at startup, or working? I'm interested in what happens when the adapter is not recognised.
Your network devices are a mess. There are a bunch of other drivers in there which may have some settings that are interfering with the Intel. Also, you seem to have very frequent application crashes. Sometimes - an this is say from experience - a driver can get corrupted in the side by side folder and Windows being what it is, will constantly try to restore the corrupted driver.
I have asked before, and I will again - do you have System Restore enabled? Do you have a restore point from before this behaviour started?