USB Device Not Recognized, Part II

Posted by: DT  :  Category: Troubleshooting

This is part 2 of the “USB device not recognized” article, continuing with point 7.

#7 For the PRO: If your USB flash drive has an LED light, check if its illuminated or not. If it isn’t, then its possible that your drive doesn’t get enough power from the port its plugged into. Just try a different one or another computer to check if this is the case. If a restart of the respective host machine doesn’t help to juice up the USB port you should seriously consider buying a stronger power supply unit. Insufficient power is actually a widespread problem with computers especially if its extensively used with high graphics games and applications. As this may also have to do with general overclocking, you may want to try a free overclocking tool to adjust components and resources. For an overview check these sites:,2059.html

Beware though that this is more for the professional! I take no responsibility if your computer may end up with more damage than before if you don’t know what youre doing or fail to properly educate yourself.

A similar professional solution to solve this problem may be to turn off your computer, unplug it from all power and then proceed to physically clean your mother board. After you’ve cleaned it, release the jumper of the USB power in the motherboard.

USB Power Jumper Location on Motherboard

May the Power be with USB: Location of Jumper
Image credit:

Take it out for a few seconds and put it back in. You can also try to switch the jumper to a new position, like from from 5V to 5V Standby or vice versa. Apparently this has worked for some folks who knew what they were doing – like this guy on the softwaretipsandtricks forum where I got this from:

#8 There may be a virus on your computer which blocks your flash drive and other things to work properly. In that case, do a scan with your currently installed anti virus program and remove anything it finds. If that doesn’t work or you don’t have an anti virus program installed yet, its time that you download a good program from the internet. Personally I recommend malwarebytes Anti-Malware which has a great free version and can be registered for real time protection with a one time fee. This program has recovered and saved my computer many times from infections that other AV programs weren’t able to fix, let alone discover! They have a great help forum too. But there are many other programs to choose from so just scour the net for free (trial) versions.

#9 Some have also suggested to change a few registry keys but just like with #5, I pretty much leave you on your own with that one! This forum post explains it:

#10 If all of the above fails and you can get over the fact of losing your data, try to reformat your flash drive. This will only work if you can get the drive to be recognized on another port or operating system.
Just go to my computer, find your flash drive and do a right mouse click. Choose “format”, pick the settings and file format system you like and click start.

2 Screenshot Steps of How to Format a Flash Drive

System Overhaul: Formatting your Flash Drive
Image credit:,

FAT(16) can be used for best performance with drives of 2GB & below, but generally FAT32 is recommended with cross-compatibility for most operating systems. NTFS is only useful for Vista and XP in case you want to get additional controls like group or owner settings and file permissions. Windows 7 even offers a USB specific format now, called exFAT.

#11 At this point you may have to face the fact that your flash drive is simply defective. Here, the only thing left to do is checking or contacting the manufacturer’s website. Just look up the brand in your favorite search engine and you should be able to find their customer service on the respective website. Here are some support sites of common flash drive brands:

Super Talent

There may be a driver or firmware update for your flash drive or some fix posted. If not, you should just contact them and hopefully they can get it to work for you. If you still have a valid warranty on the product you may get a replacement sent to you. Or you could just buy a new flash drive. Since most are pretty affordable these days this would be the easiest and a possible “take it up a notch” solution. ;-) If you have critical data stored on the malfunctioning drive though, this is a tough luck solution (like #10).

Well, that’s it. This concludes our 2-part article on fixing the “usb device not recognized” error. Hopefully your flash drive is functioning again. If you still have problems or have come across some other causes and solutions please make a comment below.

Click here for Part 1

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