I believe this problem may be to do with a card reader on your PC.
Make sure that you install the correct device drivers from your PC manufacturer's website or the disk that came with your PC (probably under removable media or chipset).
I hope this helps, if you have any questions please ask.
Oli
My Computer
Computer Manufacturer/Model Number
Apple MacBook 5,1
OS
Windows 7 Profesional x86, Mac OS X 10.6 Snow Leopard
CPU
Intel Core 2 Duo 2.4Ghz
Memory
4GB DDR3
Graphics Card(s)
Nvidia 9400m
Monitor(s) Displays
13.3" Internal + 22" DVI + 21.5" USB
Screen Resolution
1280x800 + 1920x1080 + 1920x1080
Hard Drives
Internal SATA 2.5" 500GB (395GB Mac HFS+, 105GB Windows NTFS)
2.48TB RAID consisting of 5 disks (HFS+)
4 x 4GB DDR3-1600 Corsair Vengeance CMZ8GX3M2A1600C9B (16GB)
Graphics Card(s)
MSI GeForce GTX770 Gaming OC 2GB
Sound Card
Realtek High Definition on board solution (ALC 898)
Monitor(s) Displays
ViewSonic VA1912w Widescreen (VGA)
Screen Resolution
1440x900
Hard Drives
OCZ Agility 3 SSD 120GB SATA III x2 (RAID 0)
Samsung HD501LJ 500GB SATA II x2
Hitachi HDS721010CLA332 1TB SATA II
Iomega 1.5TB Ext USB 2.0
WD 2.0TB Ext USB 3.0
This is the main Dell drivers & downloads page for your laptop: Drivers & Downloads
It looks like that you're going to have to install the Vista drivers, as there aren't any Windows 7 drivers available for your laptop (apart from those natively included in the OS).
4 x 4GB DDR3-1600 Corsair Vengeance CMZ8GX3M2A1600C9B (16GB)
Graphics Card(s)
MSI GeForce GTX770 Gaming OC 2GB
Sound Card
Realtek High Definition on board solution (ALC 898)
Monitor(s) Displays
ViewSonic VA1912w Widescreen (VGA)
Screen Resolution
1440x900
Hard Drives
OCZ Agility 3 SSD 120GB SATA III x2 (RAID 0)
Samsung HD501LJ 500GB SATA II x2
Hitachi HDS721010CLA332 1TB SATA II
Iomega 1.5TB Ext USB 2.0
WD 2.0TB Ext USB 3.0
