Possible Virus? CPU usage always 100% and Can't Connect to SENS

Question

I've had this error a while and I keep looking but can't find a solution.

Problems: - Every time I start my computer it 'Cannot connect to system event notification service'. This means non admin users cant log in and I guess a number of other issues I'm unaware of.
- My CPU performance according to Task Mgr is always 100%. THis can't be right. (Although not in safe mode)
- Also seems to have defaulted my taskbar to Windows classic. And I cant seem to change it back to Aero.

Attempted Solutions: - So far I've installed malwarebytes/spybot and antivirus(avast). - I've done a system restore to before the time it started.

I'm totally stumped. I think either its a complex virus, I've missed something obvious or its a Windows Update or something.

Currently running Windows 7 (home premium). Any advice would be great!

Answer 1

I had the same saturation problem on my HP Pavilion DV6 and found this answer that worked perfectly for me..

Windows 7 100% CPU usage on H-P Dv6

Anyone experiencing maxed CPU usage by "search protocol host" and/or "permon", "indexing" on a H-P laptop, I suggest returning "Power Management" to "HP Recommended". It seems to cause some "loop" or conflict in the HP software. It is a simple fix, drove me crazy for weeks. But I have since duplicated the 100% cpu usage by another (foolish) attempt to manually manage the power settings. Hope this helps some of you.

Answer 2

What process in task manager is using all the CPU cycles?

Or, open a run command and type in

resmon

this will open a resource monitor, you can see what is hogging cpu cycles.

Answer 3

1. Download Spy-bot from download.com
2. Check your computer for virus.
3. Go to Start Menu type services in the search box.
4. Click Properties on UPnP Device Host and disable start up.

Second option is searching system configuration on the Start Menu, start up sisabling all start up the start up items or if it's still not working then change your battery.