Thanks to all who replied. The post from Bree explains very clearly how and why I got the security warning when trying to download the KB4052623 update directly. Seems quite bizarre that Microsoft -...

I have a laptop running Windows 10 version 20H2. I have just tried to update it, using the normal updating process. A Security Intelligence update KB2267602 downloaded and installed successfully. ...

Steve... I think I can now mark this thread 'solved'. But I also need to thank you for being there throughout and for offering useful advice and support. It's a lot easier to troubleshoot with...

Thanks again Steve.... Like you, I find that Win10, and Windows Defender, works fine on the various computers I've got, except for this Dell Inspiron 5567. It is a newer machine than almost all the...

Thanks, Steve, I'll give that a go.... (and by the way, thanks for sticking with me on this troubleshooting: I hadn't expected it to be quite such a challenge!)

I do have a slight difficulty over...

Thanks Steve - just done that reset (it was something I wasn't aware of).

It's made a very slight difference. Start up is just as slow (upwards of 2 minutes). Looking at the Task Manager and...

Thanks Steve - quite right (and that's what I looked at initially ... but then couldn't resist reading the rest of the thread).

I can't claim to be an expert in "decoding" the info in Task Manager...

I've looked at that linked site. I have to say it gets a bit complicated. Basically it seems to be suggesting disabling Windows Defender using 'winaero' (whatever that is) or other tweaks. But...

My views exactly! I have already done all current Windows updates, so there is no update process running. And all the figures on usage quoted above have come directly from the Task Manager, with...

Hi Steve. CPU usage pretty constant at 43-45% (for at least 15-20 minutes .... I haven't left it on for hours to see if it eventually drops).

Main user is the Antimalware Service Executable...

Thanks to both for those thoughts and ideas. I've disabled SuperFetch (aka SysMain).

Two improvements. Bootup reduced from 2 min 50 sec to 1 min 20 sec. And the Task Manager shows that disk...

Just to clarify and explain: I have various laptops. My main one, a Samsung RF511, originally had Win7 installed as OEM. I set up dual boot with Mint. Later, I installed Win10 in place of Win7. ...

Thanks for those initial responses. Just to clarify: the laptop is a couple of years old, but rarely used so is in "near-new" condition. It has always been very slow, ever since it was brand new,...

I have a Dell Inspiron 5567 laptop with an Intel Core i5-7200 2.50Ghz CPU, 8.0GB of RAM, with Win10 Home installed (version 21H1 build 19043.1288).

The laptop has very little data on the hard...

That's curious, Hazel123, and surprising.

We are at risk of swerving off topic if we pursue discussion about Linux (Mint). But I'll just observe that your experience is not, as far as I know,...

Thanks again, jbcarreon123 - helpful advice.

If or when I do go for a clean install, that's a useful checklist. I'll make very careful notes when the time comes...

Not a change I'm planning to make. Happy to have my system set up the way that I (not Windows!) like to have it....

Thanks jbcarreon123 for that explanation.

I have run commands like sfc scannow and chkdsk in the past as separate exercises. It looks as if the batch files run a number of different operations...

Have been away all day and now just catching up.

First, thanks to @Hazel123 for the follow-up and the comments on upgrade v clean install. My Samsung RF511 does indeed have i5 and 8 GB of Ram,...

Thanks Hazel123.

Both before I started the upgrade, and now in the light of forum comments, I've been reflecting on the pros and cons of the clean install versus the in-place upgrade choice.
...

Hello Denis....

I haven't yet disassembled my Samsung RF511 to extract the original (and problematic?) Broadcom wifi adapter. But from the extensive discussion in other forums it is certain that...

Hello (again!) Bree, and welcome to another discussion I've launched about how to deal with Win10-related glitches.

Thanks for your suggestions about finding alternative Broadcom wifi drivers. ...

More fragments of information from searching the internet.

When Win10 first came out (back in 2014-15?) Samsung laptops simply couldn't cope. Installation of Win10 simply hung and wouldn't...

Well, there's more to report.... and possibly progress, although with a slight twist.

A conversation in another thread with Try3 led me to a guide he had produced here about searching for...

Hello Denis... and thanks for those suggestions.

Just one key point to flag up. We're not talking Lenovo. A week or few ago I did indeed upgrade my Lenovo T430 laptop from Win7 to Win10, and had...