As Heyden said, going to the apple store and asking for help is well worth the trip if one is at all reachable for you. I've had my out-of-warrenty by 3-4 months ipad replaced after it suddenly died with no warning and absolutely no previous issues. We were expecting to have to buy a new one and *maybe* get a discount. Instead, the staff member talked to their manager and got approval to give me a brand new one for free instead.
My friend's ipad (actually, it was given to their 2 year old daughter because the grandparent is a ****ing moron..). When the daughter was 4 or 5, literally the week of the birthday, the ipad died. It was a year and 2 months out of warrenty, and after checking it and finding the fault was not caused by anything the family did, apple gave them a factory-refurbished ipad for no charge.
Now, there are some of very very important things to keep in mind when talking to apple :
- Make an appointment online first, so you don't have to hope someone can see you as a walk-in. In my country the appointment is made for the "genius bar" and a search for that is all I need to get the right link.
- BE POLITE AND AS HELPFUL AND REASONABLE AND NICE AS POSSIBLE. I cannot overstate how crucial this is. Apple staff have the most lee-way I've ever found in a major business, which means they *can* help you more than any other electronics company. Whether they *do* or not will depend on the exact issue, the staff, and on how you conduct yourself.
- Take someone with you as a support person who can help you carry your stuff + explain things if you can (make sure they know the details and are calm and polite themselves if possible!).
- Have as much information ready when you walk in as you can - what the problem is, what you've tried, what happened then, any repairs or issues you've had done previously, receipts, etc. Be prepared to have most of the information go unused as often the staf simply don't need to know all that. But having it ready helps *you* be calm and prepared, shows *them* you take this process seriously, and will save a lot of hassle if any of it is helpful in getting things resolved.
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That all said, there are still a couple of things to try for your ipad. You can absolutely take it into a store without trying these things, but if one is hard or impossible to get to then you still have options.
1. Make sure you have a proper ipad cable + plug (not ones made for iPhones as ipads draw more power, and definitely not any cheapie brands - you need a reliable brand just to make sure the ipad is getting the power it needs). Plug in the ipad and leave it like that for around a week. You can do the next step every day or so, but I suggest you keep it plugged in for the whole week at the least. My sister got an ipad 2 from a friend and found it wouldn't turn on, despite having worked before it was given to her. After much fussing around with cheap cables, we finally got it plugged into an apple-branded cable + plug and after a full week of sitting there unresponsive, it finally just worked one time we tried step 2.
2. Hold down the power + home buttons for AT LEAST A MINUTE. This is kind of a reverse "hard kill" thing, and if your ipad is there at all, this will get it back. It may take a dozen attempts, but if you're pesistant, it will happen if there's anything there.
Serious, final step if nothing else works - this is a COMPLETE FACTORY RESET, so use with caution :
3. Google "ipad DFU" and follow the steps outlined. This will only work of you have iTunes installed, but so long as you have that, you'll be fine.
Good luck and I hope you get your ipad back and working.