svchost.exe (netserv) high cpu usage

I have a Dell Inspiron 1545 running windows 7, 2.16Hgz, 3.0 gigs memory, google chrome browser.

Recently the laptop began to slow down quite a bit. Looked at Start Manager and CPU usage was 100%.

I then looked at the Resource Monitor and saw that svchost.exe (netserv) fluctuates from 70% to 98% when nothing is running.

Rebooting lowers the CPU usage but after a while it goes up again.

I found the website "Full Malware Scan and Removal Guide" and followed all instructions and no good results.

Hope someone here would help me out with this problem.

Thank you in advance.

Lou

That could be the reason for this time but it happens other days of the week.

I have already set to let me know when updates are available but to let me decide when to download and update. Should I set to never check and do the checking myself? This laptop is 98% used by my wife to play games installed in the hard drive.

I will also follow the instructions you attached to rename gmgr.dll and see if that helps.

Thanks.

UPDATE: I don't have gmgr.dll in any folders.
Back to square 1.

Just finished running Malware Anti-Malware and Norton Security full scan. No issues found on either.

A few days ago I ran RKill, TDSS Killer, CCleaner, Rogue Killer, ADwCleaner, and JRT. Ran some of these in safe mode. No issues found.

I already turned off windows auto update. Will check on the two mentioned updates and will follow up as you have recommend.

Won't rename the qmqr.dll file.

Thank you guys. I am at a loss. Don't know what else to do.

KB3020369 was installed 2/5/16. I don't have KB3172605. Changed Windows update to never check for updates and rebooted the laptop.

Want to manually update the second KB and started the Checking for Updates function.
It has now been running for over 1 1/2 hrs.

CPU utilization is at 100% with svchost.exe (network serv) taking around 95%.

I am going to let this checking for updates run over night and see if it ends by morning.

I have Update set at Never Check for Updates.

Window update ran for hours. I stopped the Service and went back to the Update window. It showed that Windows was up to date but I don't KB3172605.

CPU utilization was between 2% and 8%. GREAT!!

Rebooted and the service started again. Do I have to stop it every time?

By the way, how do I log off this site? Probably staring me in the face but don't see it.

Thanks for all the help you both have given me.

Lou