New 64gb micosdxc card

just recieved my new 64 gb sdxc card and 32gb microsdhc cards put 32 gb in adapter and inserted into computer worked fine no problem

inserted 64gb card in adapter then in the computer when i try to click on it in the My Computer window its says you need to fomat disc in drive d: before you can use it

but did not need to do this with the 32 gb one

when i click on format it shows the capacity as 27. gb no matter which compression i choose ntfs or exfat

also properties disdlays it as having 0% of 0gb

what has gone wrong

O/S Windows VISTA  SP 2

Sounds like your card reader is not SDXC compliant.