Please check the SMART values of the HDD and make a backup of your improtant files while they are still readable.

It could be a loose connection. Maybe try a different SATA data cable, different SATA port on your motherboard and different SATA power cable.

A modern operating system should use the available RAM for buffers and cache.

The Windows 11 installer should accept all Windows Seven license keys or better.

You just have to install the correct version of Windows.

What kind of SSD do you use?

If your operating system issues a trim command, then deleted files will be overwritten with zeros or random data.

Definitely maybe.

It may or may not stop working after the next update. That’s impossible to say.

Have you recently tried to install an ISO to an USB thumb drive? Linux or Windows media creator or something like that?

Does your country not have warranty? Bring it back to the store where you bought it and get a new one.

The Lenovo Thinkpad T420 supports standard 2.5" SATA drives and it also has a slot for a mSATA SSD.

Please post the complete output of

smartctl -a /dev/sdX

Replace X with the correct drive letter.

These all sound like memory errors.

You can test your memory with Memtest86+

Apparently your telephone has a sim lock and only accepts sim cards from Verizon.

After two years you should be able to remove this lock for free. Just call Verizon.

Please open a command prompt and try to execut it manually.

What exactly is the error message?

What exactly is the content of this batch file?

If your SDD is read-only, then it might be broken.

Have you tried to format your SSD?

AND USE A SOFTWARE TO GET VIDEO.??

Sure, you just have to write a software to decode the network stream and display it on your monitor (assuming the black box uses standard network protocols).

What kind of adapter is this exactly?

Some of these adapters have a different block size 4k instead of 512 Bytes.

Did you install the latest firmware for your motherboard?

Overclocking might not work correctly and you can literally fry your Ryzen CPU when you overclock your RAM.

Please try standard timings 3200 MHz or less.

Did he chew through the cable?

The ferrite thingamajigs don’t really do anything, but AFAIK they are made of metal and not plastic.

You should be more worried about the power cable. The cable between the wall socket and the charger brick carries 110V or even 220V AC depending on your country and could literally electrocute your kitty cat.

Some browsers might use DoH (dns over https) these days.

See https://en.wikipedia.org/wiki/DNS_over_HTTPS

SSDs don’t have any sectors.

Please post the complete SMART values of your SSD.

You can upload pictures to imgur.

What kind of cable is this anyways?

Do you have any animals who like to chew on cables?