Sd memory adapter shows error in camera - SanDisk 4GB microSD High Capacity Memory Card

You will need to connect your camera to your computer
if you can see your sd memory on your computer

click start control panel administrative tools computer management disk management right click on your drive select properties click tools you should see click check now click start two boxes

automatically fix files and scan for and attempt recovery of bad sectors place then a tick in both boxes then select check now start

you might tick one box then return after its finished the first repair then return and tick the second box you should not do anything while the chkdsk utility is in progress any input may damage this drive

I found that you get best results by ticking one box then returning after it has finished then tick the other box

hope this helps