From Windows Start, point to Settings and then to Control Panel.
Step 2: Keyboard Properties
From Control Panel, double-click the Keyboard icon, and select the Speed tab.
Step 3: Adjust Blink Rate
At the bottom of the Speed window, you'll see a slider bar. Move the slider bar to the right to increase its speed. Click OK.
Step 4: Recheck and Adjust
Use your system with the cursor blink adjusted for a bit, and see if you've found a comfortable match. If not, repeat Steps 1-3 until you find the cursor blink rate that is comfortable for you.