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I'm using Windows 8 64 bit Pro edition. I have a Sony memory stick which isn't showing up in my computer section. If I open Device manager I can see the stick there named as a mass memory device. I tried updating the drivers, removing it through the device manager and changing the stick to another USB port. If I try to use the stick on another computer (not a Windows 8 machine though) it works just fine.

What's wrong?

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Do you put memory stick in your notebook or using external card reader? is device manager Clean with no unknown device? – Kaveh Mar 10 '13 at 9:31
I've plugged it straight to my computer and no unknown devices are shown. – MikkoP Mar 10 '13 at 9:34

Actually in Windows 8 some basic drivers are not taking automatically, you have to find out which drivers are missing and install them. Then you can run the memory stick.

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Every time I've seen this so far, it's because the device is trying to take a drive letter that's already in use.

Check Disk Management in Computer Management and see if it shows up there. If so, make sure it has a drive letter or mount point.

I'm assuming it's formatted with a common file system? FAT, FAT32, NTFS ... and not HPFS or something else you might have installed a driver for on another notebook.

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