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I have currently 4 USB ports in my HP DV6 1337tx Laptop. Everything was fine until before someday when I saw my pendrive is being detected and within 3-4 seconds it is being undetected again. That thing happened to only a particular port. I use 3G modem to access internet. At the same port I see the same problem. Now the port is taking any pendrive correctly. But my modem is continuously detected and undetected by the very same port saying "No Device". So I stopped using that particular port and everything is fine as of now. Now I see another problem arising that some particular pendrives are not being detected by any of my ports but they are detected by other laptops.

So all in all I see all of my pendrive ports are malfunctioning very badly. So how can I "reset" them back to work fine as they did before?

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did you unplug the thumb drive before ejecting it? –  jjj Dec 11 '12 at 8:42
en.kioskea.net/faq/… –  jjj Dec 11 '12 at 8:56
@jjj, tried. No help! –  Mistu4u Dec 11 '12 at 9:13
When you say they "are not being detected", what precisely do you mean? Do you get the "bee-booop" sound? Do they show up in the Device Manager? Do they show up in Disk Management? –  David Schwartz Dec 11 '12 at 9:21
In case of pendrives, which are not detected, I can not hear a single sound and no icon for detection of storage device is seen in the taskbar! –  Mistu4u Dec 11 '12 at 12:40

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