it starts to boot but never gets to unlock screen.

We received two dreamtabs for the holidays. One worked and one perpetually tried to load. We tried factory reset but it hadn't ever been set up anyway. We had to return it. The replacement had the same issue. I returned it and bought one from another retailer (first two were from best buy last was from Amazon). That one worked. It's now been a few months and their both still working. If factory reset isn't working then my recommendation is replace it if you can.

my nabi dream tab is stuck on the come screen and not unlocking

You will have to hard reset it a couple times till it starts to get pass the loading screen. However you have to do this part fast.

This souns like its either a motherboard issue, battery issue or just a software issue. If its a motherboard issue, then you cant fix it. If its the battery, you can check with the company and see if its still under the warranty, or see how much they would charge to put a new one in it. But before you do all that, try doing a hard reset on the tablet. Make sure the tablet it fully powered down, Press and hold the power up key, and the Power key at the same time. Wait for the recovery mode to show up in the corner. These are just general hard reset instructions, its possible it might not work for this particular tablet. If it doesnt work, then google the nabi dream tab hard reset. and look for a button combination. Hope this was helpful for you.

I had this problem too. I’d get the ‘powered by Android” screen, then it went black. Was convinced it was the battery; however, a factory reset solved the issue! https://www.nabitablet.com/support/produ...