Root not able to reboot into bootloader

[imjyoung]

ok so im trying to root my evo v. i have downloaded all the files needed, extracted and stored them properly but when i go into the sdk-tools directory and input adb reboot bootloader i get this: C:\sdk-tools>adb reboot bootloader
'adb' is not recognized as an internal or external command,
operable program or batch file. i dont know what im doing wrong. can someone please help?
Also sdk manager is only opening as sdk manager not sdk and avd. what needs to be updated so that it will run avd properly if anything?

 

[Rukbat]

"'adb' is not recognized ..." is a Windows error. adb.exe isn;t in the current directory or the path, so Windows can;t find it to run. Go to the directory it's in first.

 

[imjyoung]

ok i found the directory now its saying: adb sever is out of date. killing...
adb server didnt ACK
*failed to start daemon*
error:
this is after i input adb reboot bootloader

 

[adamhos1234]

Make sure USB debugging is enabled in dev options, and make sure fastboot is disabled in power menu

And make sure you have correct drivers

 

[imjyoung]

usb debugging and fsatboot are good but how do i check the drivers?

 

[Mobstergunz]

Get the "sdk-tools.zip " from the root guide

 

[Rukbat]

Download the latest SDK and the latest ADB.