When turned on, says "memory card error! reinsert

This error indicates a memory problem.
The camera can't read or write data to the memory card. Try turning off and on the camera again, or take out and reinsert the memory card several times. Also remove and reinsert the battery.
It also can mean the memory card is not formatted, or there is a format error for an other reason. Format the internal memory or the memory card.
It also could mean the memory card is damaged and can't be used any more. Then you have to place a new memory card.

I hope something will help.
This is also in you user manual.

What model Sony camera? Is your memory card an SD card or an SDHC card? What size is the card?

Sounds like there was an error while the camera was writing information to the card. You can try reformatting the card using a computer and a card reader, then replace it in the camera and format it from the menu. If that doesn't work and the camera is locked up you can try to do a "hard reset" by following the instructions on page 176 of the camera manual.

Its a format error,Firts format the memory card

Check the memory card on your PC or on another phone so as to confirm the card. If it is not detected then replace as the card can have errors in the memory.
If not the camera control unit has faults and will need a probe within the unit.
It can be the fault in the interface of the processor.

buy a new card..

Welcome to FixYa.

There 3 possible causes why do you received an error message " reinsert memory card"

Cause
1 The inserted Memory Stick media is not supported for use with the camera.
2 The terminals on the Memory Stick media are dirty.
3 The Memory Stick media is damaged

Resolution
1 Ensure you are using the supported type and capacity of Memory Stick media for use with the camera
2 Use a clean pencil eraser and lightly rub the Memory Stick terminals to remove any oxidation or dirt build-up
3 Use different Memory Stick media

I hope this steps wil help you to resolve your isuues.

Thank you for using FixYa.

You'd better change a new memory card that doesn't have a problem to check whether it is matter of Canon PowerShot A480,or use another well camera to check if it is error of your memory card.

i have the same problem..
I have a Sony Cybershot DSC T70 and it keeps saying "Reinsert memory stick" whenever I turn on the camera or slide down the camera lid. Also, whenever I try to view the pictures on my laptop it shows "Please reinsert the memory stick" something along those lines. As I have been researching for the solution, I would have to format the memory card. However, I wouldn't want to lose the pictures as I just took many as from the holiday last week. The only problem is the memory card, I tried using another memory card and it works fine with the camera. There is nothing wrong with the camera.\r\nCan someone please help me how to solve the memory stick problem? It would be great. Ty.

not reading memory card; keeps saying reinsert memory card, diplays error C 1