if you stop crack that is good nd buy a legal key from Microsoft or other store and download free Version of windows and use legal key.

use windows internal app disk cleaner. it will remove unusual item.

https://www.windowscentral.com/how-troubleshoot-blue-screen-errors-windows-10?amp

If your computer is more than five years old, it will have slower performance than a new one. As more advanced software programs are released, they are optimized to run more efficiently on newer computers. Older computers are not able to run these new programs as well, which can cause them to perform more slowly. Furthermore, new software tends to be more demanding in general, which is another problem for old hardware. We recommend that you consider purchasing a new computer or upgrading your current one.

Myntra is best choice.

If you have low specifition pc and installed than capacity then it will run slow

If windiws is not updating it means you are using pirated but it also update when you use windows update app, it is free from microsoft, it allow and update latest virsion of Windows.

Jio tv app

According to TechRadar-The best web browser 2019
Mozilla Firefox. Firefox is back after a total overhaul, and has retaken its crown. ...
Google Chrome. If your system has the resources, Chrome is 2018's best browser. ...
Opera. An underrated browser that's a great choice for slow connections. ...
Microsoft Edge. ...
Microsoft Internet Explorer. ...
Vivaldi. ...
Tor Browser.

It happens because pc unexpected shut down like electric gone and no pawer saving on pc. Same happend to me. There is solution is press the reset button. It will restart then it will give option in advance option reset your pc or reinstall windows. No need to reinstall just go to rest then next option is remove everything or reset with personal files remain as it is. When you choose reset with personal file will remain as it is. Then it will starting reset. It will take half an hour to resent and previous file goes to windows. Old. It looks like seeing new installation.

Because of file copy corrupted.

https://www.techradar.com/news/the-best-web-browser

it is not an original iso file.

Yes needed because defender is only protect pc not browsing and if you have a good antivirus it is remove dangerous website which is harmful to you pc or online purchase shopping. when you browse some pop us come and it install it software without your knowing. and we thing normal browsing is running. windows defender is still not give wish performance as we want otherwise why third party antivirus needed.

it is created in windows.old and you can recover files which wants to, especially games. games saving files.

https://worldfree4u.club

https://www.pcworld.com/article/248921/need_more_storage_expand_with_external_drives.html

SOMETIMES WINDOWS DEFENDER CAN NOT REMOVE OR IDENTIFY UNIDENTIFIED MAL-WARE HENCE THERE IS REQUIRE THIRD PARTY ANTI VIRUS. YOU CAN CHOOSE BEST OF ANTI VIRUS AVAILABLE IN THE MARKET. KASPER SKY IS THE BEST ANTI VIRUS.

https://techcloud7.net/remove-write-protection-sd-card.html

if you are using portable version no need to uninstall just delete the file from program file or where you put the file of portable.