When N72 mobile is switched on it doesnt start after the Nokia logo message and displays some different hacked screen

There are many reasons to flash the Phone,Once for to remove the Mobile hanging problem,Unwanted files ,reset the Phone to original settings and remove the Network Lock,But if you need to flash it from Network lock means You can better use the Unlock code,Because Flash done using the software,they leads to data lose and Hardware crash,But Unlock code is best to Unlock the phone from Network Lock,Get the code from here
Onlinegsmunlock and Unlock it..You need to specify it locked Country,network then order code and Unlock it using the Instructions below enter the code in the Phone step by step...

Nokia N72 Unlocking Instructions Warning : Do not enter any wrong unlock codes on your Nokia N72 mobile phones. If you enter over a certain amount of wrong unlock codes on your Nokia N72 mobile phone, your phone may get hard locked and sometimes become unusable.
1 - Switch on your Nokia N72 without any sim card.
2 - Don't bother as to what is displayed on your Nokia N72.
3 - Compose #pw+CODE+1#.
4 - The Nokia N72 would then display the message "SIM Restriction Off" and will be unlocked!

Note :For Nokia N72 mobile phones locked to the network Fido or Rogers in Canada follow these instructions :
1 - Switch on your Nokia N72 without any sim card.
2 - Don't bother as to what is displayed on your Nokia N72.
3 - Compose #pw+CODE+7#.
4 - The Nokia N72 would then display the message "SIM Restriction Off" and will be unlocked!

The letter p appears if you press the button star(*) three times quickly
The letter w appears if you press the button star(*) four times quickly
The symbol + appears if you press the button star(*) two times quickly
The CODE you need to enter is the unique unlock code for your Nokia N72

there may be two reason for the following cause-
1.your battery may be drained up
2.or their may be any virus.
in cause of battery you have to buy new one but in cause of virus you have to format the phone by following method.
To format the (restore factory settings) phone here is a way .
1. Make sure you phone is fully charged. (At minimum 3/4 of bettery should be left)
2. Backup your contacts list and personal files to MMC memory card (if possible).
3. Switch-off your n 72phone.
4. Press and hold these three keys together
-Green dial key,-Star key (*)-Three key (3) then press the power on/off to swtich on the n72phone.
Do not let go the three keys until you see the formatting screen displayed
5. After a few minutes, the format will be complete. Your n72 will now be at its original factory settings (It will reach the same state as that in when you purchased it). All inbuilt applications provided by nokia will not be deleted).
i recomend you to format first.

How to Format Nokia N72 & NSeries Mobile Phones. Method 1: Three Finger Reset for Nokia Phone 1. Switch off your Nokia phone.
2. Hold down the following three keys, Green (call answer button) * Key, and Number ‘3? key.
3. While holding these buttons, press the power button and switch on the phone.
4. Wait for message ‘Formatting’ to appear on the screen and release all keys once you see that message.
Method 2: Hard Format of Nokia Mobile Phone 1. Switch off your Nokia phone
2. Now Press following key sequence *#7370#
3. Enter Default lock code is 12345.
4. While holding these buttons, press the power button and switch on the phone.
5. Wait for message ‘Formatting’ to appear on the screen and release all keys once you see that message.
Method 3: Soft Reset of Nokia Mobile Phone 1. Switch off your Nokia phone
2. Now Press following key sequence *#7780#
3. Enter Default lock code is 12345.
4. While holding these buttons, press the power button and switch on the phone.
5. Wait for message ‘Formatting’ to appear on the screen and release all keys once you see that message.
Please Note: The Above Nokia Phone Formatting method will erase all your Phone data. So do backup before proceeding for Formatting

You need to format if you dont know it.
How to Format Nokia N72, N73, N81, N95, NSeries Mobile Phones. Method 1: Three Finger Reset for Nokia Phone1. Switch off your Nokia phone.
2. Hold down the following three keys, Green (call answer button) * Key, and Number ‘3? key.
3. While holding these buttons, press the power button and switch on the phone.
4. Wait for message ‘Formatting’ to appear on the screen and release all keys once you see that message.
Method 2: Hard Format of Nokia Mobile Phone1. Switch off your Nokia phone
2. Now Press following key sequence *#7370#
3. Enter Default lock code is 12345.
4. While holding these buttons, press the power button and switch on the phone.
5. Wait for message ‘Formatting’ to appear on the screen and release all keys once you see that message.
Method 3: Soft Reset of Nokia Mobile Phone1. Switch off your Nokia phone
2. Now Press following key sequence *#7780#
3. Enter Default lock code is 12345.
4. While holding these buttons, press the power button and switch on the phone.
5. Wait for message ‘Formatting’ to appear on the screen and release all keys once you see that message.
Please Note: The Above Nokia Phone Formatting method will erase all your Phone data. So do backup before proceeding for Formatting

i think that there is a problem with your phones's firmware!! it hangs repeatedly !!!you must upgrade it!! go to nokia care and they will do it for you for rs 200!!!

the phonre software might be correpted becausr of any external file. reinstall the software fron nokia dealer.

Hi! Please Note that the following Nokia Phone Formatting methods will erase all your Phone data. So do backup before proceeding for Formatting. However, you can format your Nokia N72 in the following three methods-- Method 1: Three Finger Reset for Nokia Phone 1. Switch off your Nokia phone. 2. Hold down the following three keys, Green (call answer button) * Key, and Number ?3? key. 3. While holding these buttons, press the power button and switch on the phone. 4. Wait for message ?Formatting? to appear on the screen and release all keys once you see that message. Method 2: Hard Format of Nokia Mobile Phone 1. Switch off your Nokia phone 2. Now Press following key sequence *#7370# 3. Enter Default lock code is 12345. 4. While holding these buttons, press the power button and switch on the phone. 5. Wait for message ?Formatting? to appear on the screen and release all keys once you see that message. Method 3: Soft Reset of Nokia Mobile Phone 1. Switch off your Nokia phone 2. Now Press following key sequence *#7780# 3. Enter Default lock code is 12345. 4. While holding these buttons, press the power button and switch on the phone. 5. Wait for message ?Formatting? to appear on the screen and release all keys once you see that message. Please do rate this solution as FixYa and revert for further assistance. Thanks Rylee

if yon know how to repair mobile so change boot ic othervice contact your nearet mobile repirer..

Hi Vijayesh.

Try changing your battery and see if it solves the problem.
You can also get it formatted if this is a virus issue.

If these steps doesn't help you may need to get it checked.
Contact your dealer about this.

Regards
Faraz

Virus problem try formatting your cell.

If this doesn't work tell me.