Windows 10: ADB and fASTBOot not working while i have updated everythin

Hi I have a Lenovo laptop and have updated everything but still it can not find Fastboot devices. i have installed latest drivers and changed the cable.I have SDK Tool. reinstalled windows but still not working.Thanks

:)

 

How Do I Uninstall ADB & Fastboot?

How do I uninstall ADB and fastboot from my PC?

 

Adb drivers just won't work..

so i installed adb drivers normally but adb drivers just won't work.. i wanted to unlock my boot loader of redmi note 5 pro but it doesn't detect my phone.. mi apps like "mi flash" "mi unlock" " mi pc suite" just won't recognize my phone.. i tried some
commands from cmd but it doesn't detect my phone .. what happens is when i attach my phone in fastboot mode i get a connection sound but as soon as i try to perform a cmd command i get the disconnect sound and then my phone is not recognized .. then i have
to reboot my fastboot mode and then i try it again and same happens.. i have installed adb drivers multiple time but no luck,.. i also tried the exact adb drivers from my phone specific forum and it still doesn't works.. i have tried to clean install windows
but no luck.. what should i do now ?

 

How Do I Uninstall ADB & Fastboot?

In most cases that I'm aware of, ADB does not "install" as a Windows program, working as a "portable" application instead. This means, all you have to do is to delete the folder with ADB. To be sure, check with the Control Panel -> Programs before and see if there is a corresponding entry. If yes, proceed in the same way as with any other Windows program (by selecting it in the list and clicking the "uninstall" button).