The camera wont come on,i tap on the app,it says no camera?? It was fine the other day

You need to update your Kindle Fire HD to the latest firmware (7.2.3 at the time of writing).
Once your device is up to date, you can access camera app (with basic functionalities) clicking on Photos in the carousel. As soon as Photos starts, you should be able to find a small camera icon in the top-notch corner of the screen. That gives you access to a stripped-down app.
The installed camera app sports several added features, which have been blocked for some unfathomable reason. To access those, you need a modicum of fiddling: install ES File Explorer from Kindle App store (free app), then click on App Manager, Category, choose all apps. You'll see all the installed apps. Tap on camera and voila, you get the stock Camera app with full functionality..NOT SURE IF THIS WILL HELP YOU OUT BUT ITS ALL I COULD FIND.

try this,,,settings>storage>apps> demo video> disable

or this,'
Tap on Apps in home screen - Settings - Storage - Internal Storage - Apps - Scroll down and Identify "Demo Video Application" under the apps list .

Tap on Clear Cache and tab on "Disable", Ignore the warning message.
Note: Cust may see the "Demo mode" icon in the homescreen, however it wont bringup Demo Video

Start the camera app.

Somewhere on the screen should be an icon to switch to video and an icon that looks like a camera with an arrow below.

Tap the camera with the arrow icon.

Hmm, best thing I can say is double tap the home button to bring up the open apps on your iPad. Then close the instance of the app (and any other apps) by swiping the screen images upwards. That should force the app to 'reboot' and may fix your problem.

Perhaps you first have to remove the old apps, before you can install the new ones?
I'm used to iOS, There he apps are updated almost automatically as soon as they are available. On my devices I have some updates every day and never has anything going wrong.

core apps of iOS which cannot be deleted!
1) Airdrop
2) Apple Store
3) calendar
4) camera
5) clock
6) contacts
7) facebook
8) game center
9) iBooks
10) iTunes
11) mail
12) maps
13) messages
14) music
15) newsstand
16) notes
17) photo booth
18) photos
19) reminders
20) safari
21) settings
22) siri
23) tips
24) touch ID
25) videos
- here are 2 different ways to delete an App:
1) t's easy to delete apps from the iPhone or iPad. Simply tap and hold on any icon for about 2 seconds - see them to start to wiggle and tap the X button in the left corner. that's it.
2) For devices running iOS 5 and later, there is also another way to do this is hidden in the Settings app, in the General tab, under: usage.

Try going Settings>Accounts>Google> Tap your account> Three dots in the upper right (or press menu button) "Remove Account" ... then read your account .. then if you want, clear Play store cache and data and try it

1. Press your device's Home button.
2. Press your device's Menu button.
3. Tap Settings (or System Settings).
4. Tap Application Manager (or Apps).
5. Scroll to find the app you want to clean up, then tap the app icon.
6. Tap Force Stop.
7. Tap Clear Cache. Try using the app again to see if it's working fine.
8. Still experiencing a problem? Go through steps 1-6, and then tap Clear Data.
   • Clearing the app data will remove any custom options and settings.

Sure I can help. When you open the camera and take a picture, there is a little square in the bottom left corner, just tap it, and it will take you to the Gallery, that is how is called in Android. Another way to get to the Gallery is to tap the app drawer, this is the one with a lot of dots, in the very bottom of the screen, tap it and it will take you to all of your apps, scroll your way to Gallery and tap it. Under Gallery you might see different folder, like Camera, Downloads, etc... These folders are created automatically whenever you install a new app that have to deal with pictures. Your phone have one of the easiest method to share. If you get an MMS, just download the picture by tapping the picture, you will see the picture in full display, tap the menu icon, this is the one that looks as a box, it should be the one to the left of the home button, tap save image or download image, it depends on the type of Android you have. This will save the picture within the Gallery, open the picture, you will notice an icon at the top, when you tap it gives you the option of where to share it, from the drop down here you choose your options. There are apps easier to use for photos and messenger, like WhatsApp, Line, Viber, TextPlus, etc... will let you share right from the app without having to save the picture.