Many motherboards from companies such as Gigabyte, microstar and intel feature 1 year warranties.
ASUS boards currently offer three year warranties. From my understanding that is the best on the market.
Panasonic have the longest warranties available.
Panasonic have the longest warranties available.
If your warranty is still available for your laptop, you can send it back to Dell for a website. Alternatively, you can buy a new motherboard from Dell's official website.
why?
Samsonite luggage has the longest and easiest to deal with warranty.
BigKeys brand of keyboard comes with the longest warranty.
Presidential Spas advertises that they have the longest manufacturer's warranty.
Hyundai and Kia which both have a 100,000 mile powertrain warranty.
Pacific Coast brand has a 5-year warranty.
this is entirely dependent on what connections the motherboard has available
Sony's warranty is one year, but you can extend the warranty if you so choose.