Windows Se7en not detecting SD card

Im running Windows 7 RC1 on my Toshiba Laptop with built in Memory card reader, and when i insert my 1gb sandisk SD card nothing happens, as if i didnt put it in at all. I had no problems with the card reader when i was running Vista (which came already installed) Even if i go to My Computer and type in the F:/ which is what drive my card reader is alway at.

i got the same problem with my memory stick reader on my sony vaio laptop. can't find drivers anywhere other than the manufactures website but most of them will only install on vista.

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