Hi -
Turn off Driver Verifier.
I would suggest resetting Power Options to default settings:
START | type power | "Power Options" | "Change Plan Settings" | "Restore default settings for this plan"
I have never been a fan of NIS, N360, Endpoint, etc... It's not just Symantec/ Norton products it is all Internet Security Suites - VIPRE, KIS, McAfee, etc...
They all have 3rd party firewalls that tend to block local NETBIOS ports which are used by System Services. If these services are blocked, the net result is often an App Crash (or worse!) -
- IE/ browser fading to white background
- blue circle spinning
- "Not Responding..."
If the firewall is not configured precisely for svchost EXE's, they are blocked.
svchost = Service Host; they "host" Windows System Services and you'll usually find > 12 running with dozens of system services running under them.
MSE utilizes the Windows Firewall and I have MSE running on most systems here. The others - ESET NOD32 (I am a beta tester).
As for the reason that all ran fine for a month or two - consider yourself lucky! When my HP laptop was new in 2008 running Vista x64 SP1, NIS caused it to freeze constantly. Once NIS was removed - problems were gone. I'm now running Windows 7 x64 SP1 - 4 years later.
If both NIS & VIPRE were installed at the same time, they may have conflicted with each other. During the last few months, Windows Updates have installed, including networking related OS drivers and it's possible one of them conflicted with NIS &/or VIPRE.
I focused on NIS because of your Intel wifi driver. As I mentioned, I have the same exact driver installed here and have -0- problems. So, assuming the Intel wifi driver was good, either hardware failure was causing the BSODs or as I often see with 0x9f bugchecks where the networking drivers are above reproach - 3rd party firewall or outdated anti-virus installations are at the top of my list.
I hope the improvements you are now experiencing continue. If not, we will dig deeper.
Regards. . .
jcgriff2