I use AutoHotkey to make my own shortcut keys.
To start AutoHotKey at boot you need to put your autohot key in the folder “%appdata%\Microsoft\Windows\Start Menu\Programs\Startup”
My AutoHotKey config file:
;Shift + Arrow left - Mark line left of cursor position
+Left::Send {SHIFTDOWN}+{HOME}
;Shift + Arrow right - Mark line right of cursor position
+Right::Send {SHIFTDOWN}+{END}
;Ctrl + Arrow Left - Jump to start of line
^Left::Send {HOME}
;Ctrl + Arrow Right - Jump to end of line
^Right::Send {END}