The cooling fans of INNO video cards are notorious of bad quality. Even with post-purchase lubrication, they rarely last more than two years before failing.

There are a lot of computer shops out there which sells replacement video card cooling fans, some complete with heatsink. Best to bring your video card so you can do test fitting of the replacement fan/heatsink because sometimes the difference of the mounting will mean the difference of the new heatsink sitting well or not at all.