I am getting no memory card inserted

SOURCE: memory card not inserted

Insert your card propely. You can also check when you connect your handset to computer and verify if data is there.

SOURCE: n73 problem

Use only miniSD cards approved by Nokia for use with this device. Nokia utilizes the approved industry standards for memory cards but not all other brands may function correctly or be fully compatible with this device.
Use only compatible miniSD cards with this device. Other memory cards, such as Reduced Size MultiMediaCards, do not fit in the memory card slot and are not compatible with this device. Using an incompatible memory card may damage the memory card as well as the device, and data stored on the incompatible card may be corrupted.
Press menu and select Tools > Memory. You can use a compatible miniSD card as extra storage space and for backing up the information in the device memory.
To back up information from the device memory to a compatible memory card, select Options > Backup phone mem.
To restore information from the compatible memory card to the device memory, select Options > Restore from card.
To eject the memory card, press , and select Remove mem. card.
Important: Do not remove the memory card in the middle of an operation when the card is being accessed.
Removing the card in the middle of an operation may damage the memory card as well as the device, and data stored on the card may be corrupted.

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SOURCE: n73 no memory card inserted solution

Full format solution for NOKIA
Switch-off your phone. 1. Press and hold 3 keys; Green dial key, * Star key, no. 3 key on keypad and then press the power on/off to swtich on the phone. Remember, do not let go the 3 press and hold keys until you see a formatting word screen show! 2. After a few minutes when the Full phone formatting completed, your phone will back to original system and factory settting.

SOURCE: memory card

u ll hav to get track of the setting in ur cell about the memory card.. if any changes n the settings of mem card may display lik tis..

SOURCE: Get Memory card not inserted

simply check the memory card through card reader if it works then u have to check the socket of phone where the card is to be inserted..
that one is causing problem...may be its pins are not propely being connected with the memory card..

if  the card doesnt work even with memory card reader then the card is faulty...or if u dont have memory card reader just put your memory card in another compatible phone to check..
or get another card and put it in your phone for checking..

hope it will fix the issue so dont forget to rate it...