May be because I pruned my Startup programs.

When I posted last, it was 16299.334. On April 11, it became 16299.371. Through Windows Settings, I check Windows Update every day just to keep Windows defender to latest status.

If you see my earlier posts, you'll see that I tried lot many things and ultimately Windows Repair Tool from tweaking.com solved the problem. When asked on the forum, I also posted the logs so that...

Nearly two years have passed since my first posting and I considered my issue as closed!

In this time, my OS has progressed to Windows 10 Professional (x64) Version 1709 (build 16299.334). In the...

Attached the files.

OK, I found it. There are four logs:
- log for initial repair (947 KB)
- log for repeat repair (987 KB)
- chkdsk full log (84 KB)
- chkdsk log (5 KB)
The last two were done as optional steps.
...

If it did, I'm sorry that I do not know where to look for it.

A correction: Windows Repair Tool is available at tweaking.com and NOT tweak.com. Regret the error.

Thanks for all the time you and Dalchina spent to find a solution to my problem. Unfortunately, in spite of all attempts, the problem refused to go away!

While searching for a solution on the web,...

Yes, I ran SFC and got this message at the end of it: "Windows Resource Protection did not find any integrity violations."

I stated in an earlier mail that KB3156421 got installed on May 13,...

I disconnected Cortana yesterday. But when I started PC this morning, the system still made those 20 attempts spanning 100 minutes!

Apropos my last post, by allowing the system to take its own time, I was able to create a new local account with Administrator rights as also a Microsoft account with Administrator rights. No matter...

KB3156421 got installed on May 13 whereas my problems started around start of May, so I'd not suspect it to be the source of slow down. In fact, after I get to the log on screen, the PC seems to...

A part of output from running services.msc is shown.

79397

Does it indicate any problem with Microsoft Passport Container Service as I get it?

Re: suggestions from simrick

I am the only user and so have Administrator rights. Do you suggest creating another user with such rights?

As far as I can understand from the tutorial on clean...

My laptop: Dell Inspiron N5110 with 2.50 gHz Intel Core i5-2450M processor, 500 GB HDD, 6 GB memory.
OS: Starting from OEM installed Windows 7 Pro (x64), my upgrades to Windows 8, 8.1 and 10 went...

I've similar problem as GregH, but much worse.

My laptop: Dell Inspiron N5110 with 2.50 gHz Intel Core i5-2450M processor, 500 GB HDD, 6 GB memory.
OS: Starting from OEM installed Windows 7 Pro...