my ipad isn't coming on any more what can be the problem?

Assuming that the battery isn't empty (it can take about 15 minutes of charging before it will respond), then have you tried a soft-reset to see if that gets it to boot up ? Press and hold both the sleep and home buttons for about 10 to 15 seconds, after which the Apple logo should appear - you won't lose any content, it's the iPad equivalent of a reboot.

(I've asked for your post to be moved to the Using iPad forum, where you've posted is for questions about the AppleWorks office applications.)

I also have this problem but my iPad won't reboot. The Apple logo appears followed by the timer logo for a while and then a very brief blue screen And the Apple logo. This repeats until the battery runs down?

Have you tried to see if you can restore to your last backup via your computer's iTunes, potentially using recovery mode : If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support ?

But you may have to contact Apple, it could be a hardware issue