Pixma Pro-100 wont recognize new ink cartridges

[JaelenR]

So my cousin gave me his Pixma Pro-100 printer but it won't print because the error light flashes 4 times stating that the ink cartridges are empty or not installed so I tried replacing them but I still get the same 4 flashes. Anything else I should be trying. Open to any suggestions.

[jrhoffman75 · Accepted solution]

Was it working for your cousin before he gave it to you?

You could try removing and reseating the print head. 

https://support.usa.canon.com/kb/index?page=content&id=ART164767

[JaelenR]

It was working before he gave it to me but I didn't try restarting the print head I will try that thank you.