Hi,
Thank you for sharing your query on Microsoft Community Forum.
In order to assist you better, please provide information on these questions:
1. Does this happen on a particular website?
2. Are you having issue in both modern user interface internet explorer and desktop internet explorer?
I would like you to follow the methods given:
Method 1: Change the cursor blinking rate:
1. Press windows key + C.
2. Type control panel in search box.
3. In the search box, type keyboard, and then click Keyboard.
4. Move the Cursor blink rate slider to the right or left to increase or decrease the cursor blink speed, and then click OK. If you move the slider all the way to the left, the cursor will stop blinking.
If the issue still persists, try this method:
Method 2: Disable add-ons.
http://windows.microsoft.com/en-US/internet-explorer/manage-add-ons#ie=ie-10
If you need any further assistance, please reply and we will be happy to help you.