You can use this program to make a sequence.
Here is the link to get to download AutoHotKeys:
Here is a sample script to run the task manager made in notepad:
f & y::
Save with a .ahk extension and then run the script by double-clicking.
Test it by pressing the key f key and the y key at the same time, then the task manager should come up. You could also change what keys you would want to use by changing the f and y key. Just make sure that they have an & between them.
Taken from the help file:
How do I put my hotkeys and hotstrings into effect automatically every time I start my PC?
There is a folder in the Start Menu called Startup. If you put a shortcut to your script in that folder, the script will launch automatically every time you start your PC. To create a shortcut:
Select the script file in Explorer and press Control-C.
Right-click the Start button and choose "Explore All Users".
Navigate to the Startup folder inside the Programs folder.
From the menu bar, choose Edit > Paste Shortcut. The shortcut to the script should now be in the Startup folder.