My samsung galaxy 2 will not start

have you tried using a different charger? Try plugging it into the USB slot of a computer, does it charge then?

Try charging thru USB (here the description using a samsung tab):

How To Charge Samsung Galaxy Tab 2 Via USB Port On Computer Laptop PCNEXUS

If that doesn't work could be dead.

restart both machines and if this time it fails then use a charger not USB

change the data cable or port

if not done check your operating system
if it is windows xp in stall latest kise

Get help from INTERNET.
Buy another USB Connector.
Install Drivers for Samgsung Galaxy Tab 2 from Samgsung website or Download PC Suite(kies) form the same website.
Check the USB port both form computer and mobile.

Music, movies, photos and more can be stored on the micro Secure Digital memory card on your Samsung Galaxy S phone.
To get all those goodies on the microsSD card you need to transfer them from your computer. Connecting your Galaxy S to your computer is done with the USB cable that was included with the phone and doubles as the charging cable when plugged into the outlet adapter that also came with the phone

Plug the large end of the micro USB cable into your computer and the small end into the USB port on the top of your Galaxy S phone.
Wait for your computer to recognize the phone.
Press the "Power" button on the top right side of your phone, briefly.
Unlock the phone by dragging the padlock icon to the top of the screen.
Drag the notification pane down by touching the top of the screen and dragging your finger to the bottom.
Touch the "USB Connected" notification and then press the "Mount" button.
Your phone's microSD card will appear to your computer like an external drive.
Click on the "Start" button on your computer and then click on "Computer."
Double-click the drive icon that corresponds to your Galaxy S phone.
This will open a folder that shows the contents of your phone's microSD card.
You can copy files to and from the folder like you would any other folder on your computer.

Click the "USB Device" icon in the task tray of your computer.
Click "Eject USB Device."
Wait until you're done transferring files before ejecting the phone from the computer.

Unlock your phone and drag down the notification area.
Tap the "USB Connected" notification and press "Disconnect."
You can now safely unplug your phone.
Bluetooth
http://www.samsung.com/global/microsite/galaxys/userguide/connectivity.html

Download the kies ( pc suit for samsung ) in the following link, http://www.samsung.com/in/support/usefulsoftware/KIES/JSP

Music, movies, photos and more can be stored on the micro Secure Digital memory card on your Samsung Galaxy S phone. To get all those goodies on the microsSD card you need to transfer them from your computer. Connecting your Galaxy S to your computer is done with the USB cable that was included with the phone and doubles as the charging cable when plugged into the outlet adapter that also came with the phone.

Plug the large end of the micro USB cable into your computer and the small end into the USB port on the top of your Galaxy S phone. Wait for your computer to recognize the phone. If the phone is not getting recognized it could a driver problem. Click start control panel administration tools computer management device manager scroll through all of your devices or for Windows 7 click start right click on computer select properties in the left pane device manager scroll through all of your devices. If you see a yellow question / exclamation mark ? ! or a Red X you will need to update the drivers for this device right click select update driver/reinstall driver software Rather doing a driver hunt which can take hours. http://download.cnet.com/slimdrivers-free/3000-18513_4-75279940.html Windows XP/Vista/7/8 This might take some time being a freeware driver solution Note: The Driver program will find all of your outdated drivers This will automatically search for and find the correct driver you will have to update every driver individually once you update you might be asked whether you want to restart or make a system restore point. Click no to both of these then continue updating each driver free then restart once all of the drivers have been updated. Press the "Power" button on the top right side of your phone, briefly. Unlock the phone by dragging the padlock icon to the top of the screen. Drag the notification pane down by touching the top of the screen and dragging your finger to the bottom. Touch the "USB Connected" notification and then press the "Mount" button. Your phone's microSD card will appear to your computer like an external drive. Click on the "Start" button on your computer and then click on "Computer." Double-click the drive icon that corresponds to your Galaxy S phone. This will open a folder that shows the contents of your phone's microSD card. You can copy files to and from the folder like you would any other folder on your computer. Click the "USB Device" icon in the task tray of your computer. Click "Eject USB Device." Wait until you're done transferring files before ejecting the phone from the computer. Unlock your phone and drag down the notification area. Tap the "USB Connected" notification and press "Disconnect." You can now safely unplug your phone. Hope this helps.

my computer does not recognized my phone every time I plug the in computer I got this messenger, usb device not recognized.
Any help is appreciated.
Tanks

You can do it in few ways.

1. By bluetooth. You need to pair your galaxy with your computer. If no bluetooth on your computer then proceed to option-2

2. Connecting the galaxy in USB-Harddisk mode. Just plug in the USB cable that came with the samsung box and your PC should recognize the galaxy as a mass media storage. You can simply copy & paste the images

3. Using PICASA. the android can connect to your picasa albums and download

4. Install Samsung Kies and after that you should be able to transfer pictures automatically (sync)

Hope it helps..