I own a Dell Inspiron 5584. Last week a dog chewed through the AC adapter, rendering it inoperable. Ordered a replacement adapter -- Dell product (not off brand), same wattage (45W), same specs all around. Plugged it in, received an error message that the adapter could not be recognized. Laptop works, but very slow, and does not charge the battery. Tried every other suggested fix from a different thread, aside from taking apart the adapter and re-soldering it, and nothing has worked. Do I need a higher wattage adapter?