El Pendrive no aparece en Windows 7

http://www.taringa.net/posts/offtopic/2264252/Solucion-del-problema-Windows-no-reconoce-dispositivo-usb.html

http://windowsespanol.about.com/od/ReparaProblemasDeWindows/a/USB-No-Aparece.htm

http://windows.microsoft.com/es-es/windows-vista/tips-for-solving-problems-with-usb-devices

http://h10025.www1.hp.com/ewfrf/wc/document?cc=es&lc=es&dlc=es&docname=c01910749#N333

http://h10025.www1.hp.com/ewfrf/wc/document?cc=es&lc=es&dlc=es&docname=c01910749#N132