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A couple things to try:
https://answers.microsoft.com/en-us/windows/forum/all/windows-10-network-discovery-keeps-turning-itself/00d512b2-1515-4d11-bd77-5f8a681928e1
...

MAC addresses are HARDWARE addresses, and are different from IP addresses. Each NIC has a MAC address. For WIFI, there would only be one MAC on the phone to connect to your network. BT and WiMAX...

If you are running older apps, they might be really really small on a 4K monitor (HiDPI).

https://www.eizoglobal.com/support/compatibility/dpi_scaling_settings_windows/...

Well, that's your call. You could still just replace the router.

I mentioned Firefox Beta or Nightly for Android, but I haven't tested those myself.

You could always get a DP to HDMI cable also. Most monitors have HDMI ports nowadays.
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Why is your DVD drive assigned to D: ? Try assigning it to something like R:, and then see if you can assigned D: to the second hard drive.

Ports are like doors. A blocked port is like a locked door.

For Firefox on Android, about:config is disabled in builds other than Beta or Nightly. I'm not sure which browsers still allow port...

I don't see that Linksys router model number on their website. Please verify.

In any case, this seems to be a problem specific to Linksys routers, because they use port 10080 for the guest...

Are there any errors in Event Viewer?

I would also run RAM and HD diags.

Did you try another browser? What version of Windows are you running?

Did you do any hardware tests?

Both of them should require a powered SATA to USB adapter. The power draw of most 3.5" drives is more than standard USB 3.0 can provide. A standard USB 3.0 port can provide 900mA (0.9A).

If I'm...

If the drive could be run on USB Bus power alone, they wouldn't have added the AC adapter.

The picture in post #3 looks like a SATA to USB adapter for 2.5" drives, unless it has a separate power...

3.5" desktop drives usually require an external power adapter. The photo in your first post looks like it has a power plug. 2.5" laptop drives can usually run on USB 3.0 Bus power alone.

How do you know it's not the hard drive that is failing? Did you run diags on it? I wouldn't just assume it's the USB adapter.

I can't see any detail about that SATA to USB adapter, but does it...

If the hard drive failed the tests, then you need to replace it. There is not software fix for a hardware problem.

If you don't have an image backup with Acronis True Image or a similar product,...

I would go with an SSD for sure.

This is the direct download link. Just unzip and run DiskInfo64.exe
https://crystalmark.info/redirect.php?product=CrystalDiskInfo

It should also be able to give you the S.M.A.R.T. info.

Or you...

You'd need to run a hard drive diagnostic test. As jdc2000 said, you can check Device Manager to see the make/model of your HD.

You could also run a utility like CrystalDiskInfo to get your HD...

"bad block" sounds like a bad hard drive. Did you run any diagnostics?

What is the make/model of your computer?

In any case, backup your data to another drive ASAP.

The Lenovo CPU has 8 CPU cores vs. the LG's 4 cores. More cores would be better if you run virtual machines.

It depends on what you want to do.

The Lenovo 82JF002RUS has more powerful CPU and GPU.
https://www.notebookcheck.net/Intel-Core-i7-11800H-Processor-Benchmarks-and-Specs.525586.0.html...

I can't find the 82JF002RUS listed on Crucial.com, but it seems to be a Lenovo Legion 5 series laptop. If this is the right series, it says 2 SODIMM slots....

According to the specs, it should have RAM onboard and isn't upgradable. I see configurations with 8 or 16GB....

What is the make/model of the laptop?

I would just remove "Yahoo search" and "Yahoo toolbar and new tab". You only need one of them.