The age of a bottle doesn't necessarily determine whether a wine is good. The year on the bottle is the year the grapes were harvested. If a harvest was bad, the wine will be bad no matter how soon or long you wait to drink it. (As in "bad" I mean undesirable; not undrinkable!) So first, do a little research on the vintages you have. (Most wineries have web sites that you can read about their harvests, etc.)
Secondly, storage plays a HUGE factor. Was it stored in a cooler climate or at room temperature? Was it stored in a cellar or other dark room? Or under lights (which includes the fridge!)? So the answer isn't simply a yes or no without these details.
White wines are more delicate than reds, and don't have nearly as long of a shelf life as reds do...even when they are stored properly. Most whites have a 1 - 3 year life span. At this point, the best way to find out of your wine is good is to open it, let it breathe a while, then smell it. If it seems too sour, then most likely it has turned. If you're not sure on smell alone, you could taste a small sample of it (an ounce or less). If it is bad, it won't make you sick to taste a little of it. Obviously, don't drink more than a glass if it just doesn't taste right to you!