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.

update direct x, c++ redistributing above 2008, and sdk download from windows site. sdk and dll missing most of the these type of error.

hardware problem. go on store for repaire.

use original charger. can not charge fast it is depends on company how made it. some changer take 2 or 3 hours and some take 1.30 hours.
if you want to fast charging go store and find suitable charge for your laptop.

try windows 8.1 boot and then upgrade to windows 10

because of windows file corrupted you need to reinstall windows.

https://www.drivereasy.com/knowledge/fix-100-disk-usage-in-task-manager-improve-pc-performance-on-windows-10/

Step-by-Step Instructions with Screenshots
Log into your Gmail account.
Pull up an email from the offending sender. ...
Hit the down arrow to the far right of the sender's name.
Click Block (Sender Name) from the list that drops down.
Press Block to confirm.
Click the gear Settings icon on the top right of your inbox.

Shift+Win+Up arrow: Maximize the active window vertically. Win+Down arrow: Minimize the window/Restore the window if it's maximized. Win+Left/Right arrows: Dock the window to each side of the monitor. Shift+Win+Left/Right arrows: Move the window to the monitor on the left or right.