My blackberry 8800 powers up to a black screen. still receives calls, but can't see anything. tried a different screen, still same problem. so please help!!

Reinstall your blackberry OS, and you can unlock blackberry 8800 with pressing any password 10 times. But you will lose all your previous data during blackberry unlocking process, not too good at least you still can use your blackberry again.

A few steps here are required.
Step one: Power on the BlackBerry and wait until you get to the main screen.
Step two: Dial *#06#, this will give you the phone's IMEI, write it down.
Step three: Call 1-800-331-0500, this is AT&T's Customer Service number, it will ask for your phone number, type in whatever number you want and then proceed to customer service.
Step four: Inform the rep you are moving to Europe and would like to have your phone unlocked, from there the rep will walk you through the unlock process.
Step five: After unlocking the device, put in a new SIM card to test it out.

For the best unlock code for your Blackberry model mobile,
you can try this site http://www.theunlockarena.com/blackberry-8800/rs13wp9/
It has the step by step instructions and easy methods for unlocking your mobile phones.........

Hello

You have to unlock that BB first
This unlock code provider generate full LEGAL unlock code direct from Blackberry server which wont void your warranty, & generate code based on your IMEI, means individual code for every blackberry set.
After unlocking from this provider's code your blackberry not only work with single network, you can use your in any part of world with any network including your browser & MMS picture messaging to work, yes with just one time entering code from your keypad.
They unlock from network who locked your blackberry
This site will help you a lot & good email & 24/7 phone support

http://blackberryimeiunlockcodes.com/

Try pulling the battery.

Yes you Can receive Multimedia Messages on your Blackberry Handset
for this you need to call your Network Service provider and request them to activate MMS services.then you will able to send and receive Multimedia Messages.

yes it will happen when u connect with your Bluetooth you have to use your Bluetooth only no u can see anything on your phone

Try taking the battery out for a minute then putting it back in and see if it will turn on. Otherwise the display may be broken, did it get dropped?

MY BLACKBERRY 8800 POWERS UP TO A BLACK SCREEN.
TRIED A DIFFERENT SCREEN BUT STILL SAME PROBLEM.
DOES ALL NORMAL AND USUAL NOISES FOR A WORKING PHONE, SIDE BUTTON START THE VOICE COMMAND BUT STILL CAN'T SEE ANYTHING.
SO PLEASE HELP, IS IT TIME TO LET GO OR CAN STILL BE SORTED?

are you holding they keys for too long??