Windows 7: cursor blink rate problem

Whenever I boot up the system, my cursor will blink in the fast speed. I need to go to control panel, keyboard & change back to normal speed.
But next time when I boot up again, it happen again. How to solve the above problems ?
(note: i've changed the registry but didn't work)

when you power off your computer, you click start than shutdown right? if you do a hard shut down than it wont save this change.