USB Not Recognized (Flash Drives And Externals Only)
Jan 6, 2010
I have tried multiple fixes and still cannot connect any flash drive or external drive to any usb port on my computer without the dreaded "Usb not recognized" error. My mouse and keyboard are both usb and have worked fine though. I have unplugged the power cord from my psu for a few minutes. I have booted into safe mode. I have deleted the infcache.1 file. I have check my Bios settings (and have latest bios update). I have completely removed all the usb devices in device manager and rebooted which reinstalled everything. I have booted the computer up with a flash drive already in a usb port. I have gone into Drive Manager to see if anything is recognized without a drive letter. I have even applied the hotfix from here - [URL]. Nothing seems to work, yet all of these devices work fine on my netbook running Windows XP.
When I originally installed Windows 7 everything was working fine. I would say it roughly stopped working a month or two ago. I don't constantly use flash drives or my externals so I could be a little off on the time frame (why I didn't do a system restore). I first noticed the problem when I plugged in my Tmobile G1 phone to transfer files and it wasn't recognized. My phone would still charge off of the usb port, but I couldn't mount and browse the 4 gig sd card in my phone. It was working before because I have files on my phone that I transferred from my computer after the Windows 7 install. I started testing out my known, working flash drives as well as my usb powered 2.5" external drive and they too come up unrecognized on all usb ports (front and back).
My specs:
AMD X2 5000+ BE
Gigabyte GA-M55plus-S3G mobo
G.Skill PI Black 4GB ram (2x2 - DDR2 800)
2 Western Digital Sata drives
Nvidia 9800 GTX+ video card
450 Watt PSU (don't remember brand right now, but good amp rating on 12v for video card).
Windows 7 Ultimate x64
The only drivers I am using for the system that are not the default Windows 7 drivers are for my video card and onboard audio. Onboard audio is the only Windows 7 driver provided on the Gigabyte website for my motherboard. What shoild I do, check or double check or should I start considering formatting and a reinstall of Windows 7 (which I have been trying to avoid)?
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Dec 22, 2011
all of a sudden my 2 cd-rw drives are recognized as cd-rom.
no new programs have been installed. i have win 7, 64 bit
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Oct 6, 2011
This problem just popped up on both my win 7 machines. Powered usb external drives (the ones that are based on standard hard drives and plug into the wall) are recognized, but the smaller usb powered ones are not. The drives work on the same computers when booted xp so it's not the usb itself.
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Jun 30, 2012
I installed the Chrome OS IMG file on my flash drive and tried to boot from it, but it turns out my flash drive is now un-recognizable. I tried assigning a different drive letter in computer management, but it doesn't show up there. Sometimes it will show up and Windows will say that I need to format it, but the format always fails.Other flash drives are recognized by my computer. I am using a Lexar Jump Drive, but I'm not sure what model it is.
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Aug 10, 2012
i have decided to put my external HHD into my Desktop, because i have 4 WD externals, but the lack of Sata ports i bought PCI Express ( HighPoint RocketRAID 640 ), connected it, installed the driver & everything, but when i looked for my HHD in My Computer & Device Manager i didn't find them! Please tell me how to make a RAID between the two to show up in My Computer as one 6 Tera HHD as it was in the external unit? PS: i tried to but them back to the external unit, but that also didn't work! this is the device manager:-
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Jul 16, 2012
since last week ive been having a adobe flashplayer problem . I need to do you tube videos but now I cant get any videos everytime i try and get a video it tells me i must have adobe flashplayer 9 or better installed on my computer !!! Ive downloaded flashplayer 11.3 like 40 times and it still does not work . Its like flash-player is not recognized on my computer no more even though it is downloaded and installed.
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Feb 9, 2010
I have an HP laptop which I recently upgraded from Windows XP Pro to Windows 7.
The flash drive (Lexar Firelfy 2GB) I was using on the XP OS can no longer be read under the Windows 7 OS. Information are stored in it (I am able to access it with computers other than mine), but my computer does not see them.
I have also tried different flash drives with the same results. Under disk management, my computer detects the flash drive but is unable to read it.
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Mar 3, 2012
Been on Windows 7 for a couple years. (On Windows 7 HomePremium) Windows 7 on partition of my main HD (sata) (Western Digital- have had good luck with them over the years)had a second 320 gig HD (sata) (WD) and a third 12 year old WD ide 40 gig (scuzzy, mainly just backups) Abit IP35Pro mobo (was suspecting sata connects) It's been fine. Until maybe a few months ago when my 320 gig hd blinked out once. I ended up clean reinstal windows, wiped it, lost some data. changing the sata connections brought it back. Might've happened twice.
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Jan 12, 2013
I'm running WIN 7 on my home pc and transferred some files via a Flash Drive to a laptop running XP Pro to go on a trip. Upon my return I update my home pc with the data from laptop/FD; I've done this with no problem many times. Upon my return this time my home pc will not recognize the FD. I've updated the driver, checked Disk Management, etc all to no avail. The FD isn't recognized and neither is a second FD I tried. They both work on the laptop.
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Oct 28, 2009
I've created the ISO file and moved it to the 4g drive using the AWESOME guide found here. However, the BIOS doesn't seem to recognize that the device is present. I've done some research and found that some usb drives aren't compatible with the BIOS? I made usb storage the only available boot option and nothing showed up.
However when I look at the drive while in Vista through my computer->G: It shows up as a windows system. I've also seen somewhere about enabling "Legacy usb"? I didn't find anything like that. Should I just got buy another flash drive and try again?
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May 8, 2012
in 7 doesn't see any USB flash drives. Check in disk management - not showing up there either.AND........If I switch HDDs & revert to XP - same thing. No usb flash drives appear. And in control panel > disk management they do not appear as unassigned also.
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Jul 21, 2011
I've got three different (but identical, to look at them) MicroSDHC thumb drives. When I tried them in my new Win 7 PC, it assigned a different drive letter and description to each, under Devices with Removable Storage. Even though "Hide empty drives in the computer folder" is checked in my Folder Options, it's not working -- they're still listed under Computer, grayed out. Worse, when I fire up Windows Explorer, it occasionally (but not consistently) gives me a series of errors about the drives not being available -- and this continues to happen even after I uninstall them in Device Manager.
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Jan 16, 2012
2 of my usb flash drives are not recognised while 2 are, and I have just been given a new one.When I plugged it in the computer said it was loading drivers and then that it was ready for use.It shows up in device manager but I cannot access it from 'my computer'.The same applies to 2 of my 4 drives.
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Aug 6, 2012
When I put the flash drive into any of the USB drive on the computer I get a message come up firstly asking me to format the flash drive. I even get this message come up when I plug my TomTom satnav in via USB.If I click on the drive designation I get the following message: {{ K:drive is not accessible. The volume does not contain a recognized file system. Make sure that all required file system drives are loaded and that the volume is not corrupted.}} I know that the memory sticks are OK as I have tried several and also tried all the USB slots on the computer and in another computer. I cannot remember having done anything to have caused the problem since last using the USP drives.
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Feb 21, 2009
It is difficult to remove multiple flash drives using the safely remove hardware dialog. I had three flash drives plugged into a USB hub, and I wanted to remove all three at once. I click on the remove hardware icon in the notification area, but it only allows me to select one drive at a time.
When I click on a drive to remove, the dialog disappears and another window opens to let me know that the drive can be removed.
I have to repeat this process for the other two drives. Worse still, the remove hardware icon changes position when the safe to remove dialog appears.
Ideally, when multiple removable devices are installed, the remove hardware dialog should remain visible after selecting a device to remove. That would allow the user to select additional devices to remove if so desired.
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Feb 26, 2012
I have win 7 home premium on one tower and win 7 pro. on another. My question is can I save a system iso of each one on usb flash drives in case of a crash? My home premium c:/ drive shows 445gb. free from 465gb. so would I have to use at least a 20gb. flash drive. I know New Egg has a large selection of flash drives. I have a second hd in my pro system I used to save a complete iso backup on it.
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Mar 16, 2012
I install a flash drive, opens automatically, when I close programs and click remove I get a window item is still in use. Close all programs and click safe to remove. I am not real literate on computers but I don't know where to go to even find if there is anything left open in the flash drive. I keep going back ti remove safely and same window comes back.. How big a risk if I just remove it?
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Dec 9, 2011
I have a problem with my PC. It is simply can't read lot of USB drive. I need to restart in order to be able to read it. Sometimes it is working or else it is still fail to read.I don't know what is the problem but I get this Inaccessible Function error. And when I checked at Disk Management, the file format of the USB flash drive shown as RAW.I have Ubuntu on my PC (dual boot). And it is just working. Therefore for some reason, my Windows 7 is stupid enough to detect my USB file system.
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May 25, 2012
I've got new computer with Windows 7 & for some reason or other cannot access two Sandisk flash drives (Cruzer Blades) yet no problems with other makes!
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Apr 20, 2009
I have a couple of flash drives I have formatted to NTFS. One for an install drive and one for a readyboost test. If I formatted the drive in CMD do I have to format it the other way (to FAT32) in CMD or can I just right click the flash drive and format it there?
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Jun 8, 2011
I got a new motherboard yesterday, installed it, and installed windows. This morning, I decided it would be a good idea to flash the UEFI (BIOS) to the newest version. Now, when I try to boot, it just sits with a gray cursor at the top left of the screen. I went into the UEFI and went to boot order, but it only shows my 1TB hard drive and my dvd drive. But I had a 750GB hard drive with windows installed. I think this is the reason it won't boot, because it doesn't see the drive with the OS installed.
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May 28, 2012
I have just recently acquired a flash-drive and have been curious as to how to encrypt some files on it. The key word being some.It's a large drive (8GB), and will be used for many different things. I want an area on the drive to be used to transport/hold personal documents which I wish to have encrypted.I have tried software like TrueCrypt which decided to use the whole drive, and didn't seem to work properly anyway (?)I want something that acts like a 'safe', I double click it, I enter a password, I access the files.I need the software to run strictly from the stick, without the need for Admin' Privileges and for it to work on most operating systems (2000 and newer)... I understand I could use old fashioned password protected/encrypted .zip's.... but I don't know if Windows can natively read these without the need of say 7zip or WinZip.
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Mar 31, 2012
When attaching a flash drive:
1. The autoplay pop up doesn't appear;
2. The device does light up initially;
3. The device doesn't show up in "Computer"
4. The device doesn't show up in Disk Management - just Disk 0 (system reserved, C: and I and 0 (CD ROM)
5. The device appears in Device Manager under USB controllers as a storage device but I can't access it.
6. This happens with all memory sticks and occasionally with ipod etc.. but sometimes for no apparent reason they work! All devices works ok with other computers.
7. 9 times out of 10 plugging in a device or turning on the USB attached printer will cause the computer to BSOD, usually with IRQL NOT LESS OR EQUAL 0X0000000A
8. Devices are never allocated a drive letter.
The only thing I can think of is that I repartitioned the external hard drive (which I attach to back up) which may have confused the computer with driver numbers? Possibly?! And I did fiddle with the System Reserved drive as I had back up issues and one of the solutions was to rename it, then I renamed it back again (I think).I'm running Windows 7 Home 64-bit, Avira anti virus and the computer is about 6 months old, working ok until a month ago. Can't think that we downloaded anything about the same time as the problem started but possible. I've tried to update all drivers that I can think of but the only one that needed doing was the Nvidia GeForce 7025 which was outdated.
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Jul 16, 2012
My netbook that uses windows 7 starter cannot detect any of the flash drives and has display troubles cause everytime restart its display will be in windows classic. Should I take it to be repaired??
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Mar 24, 2011
All of my Removable Storage Devices (Flash drives, External HDD) do not work with my Windows 7. When I connect them, I hear the beeps but the device sometimes show up, sometimes not and sometimes they appear after a long interval. On accessing them, Windows tell me that I need to format the drive. Well, I can't do that. It's happening with all of my removable devices, not just one. They work fine with my laptop which is Windows 7 too,
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Mar 11, 2012
Windows 7 HP has suddenly started to create headers for the alphabetical groups it has started to organize the contents of my flash drives into. Here is an example: The headers were not there last week, they have not been there since the system was built a year ago, they are not on the drives themselves and they do not appear when the flash drives are plugged into my XP system. I have made no changes that would account for the appearance of these headers during the past week or so.
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Aug 15, 2011
My laptop is not letting me copy anything onto USB flash drives. I'm using windows 7. I have already tried system restore and uninstalling the drive in Device Manager and Disabling write protection in the registry but to no avail. I am able to format the pen drive and also access files on it and copy files from it. But I am not able to paste files from my laptop onto the pen drive. It says "Destination folder access denied" and "You need permission to perform this action". I am running an administrator account. Also I am able to do everything normally in the case of a external HDD but again face the problem when trying to paste something to SD cards. I have taken ownership, run as administrator and also tried to drag-drop but to no avail. This not for just 1 particular file/folder. I am not able to copy anything to the USB and at the same time I am able to copy anything to the external HDD.
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Sep 29, 2012
I have a Zotac 570 gtx connected via HDMI cable to my Asus VE258 LED monitor.I've had this video card and monitor setup working before with the exact cable, card and monitor.Something changed in my system where the monitor is no longer recognized for what it is. When i go into my Nvidia control panel under change resolution 1.Digital Display, 2. DVI-PC Display - Resolution 1080p 59 Hz. There is no DVI cable plugged into the computer and the monitor is set on HDMI input. When i go to my Audio playback devices, the HDMI connection does not show up at all, even as disabled or disconnected.When i go to play a game (Diablo 3, Skyrim, Farcry2) The game either doesn't open (skyrim) giving me the error that resolution is not recognized (but then does not give me any resolutions to choose from in the options menu) or will play (Diablo 3) but is stuck on extremely low resolutions with only 2 options.
Here's what i've done. Contacted Zotac and had them send me the most recent drivers for the video card. Uninstalled originals and re-installed the new ones. Contacted Asus (they say its not the monitor as long as its set on HDMI input) I am unable to find a driver that will make my computer (Windows 7) recognize the monitor for what it is. Zotac failed after their attempt with the driver and told me to RMA the card. So i did... i waited a month.
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Jul 21, 2011
I just finished putting together my computer, installed Windows 7 Pro 64 bits. However, both of my hard drives (one SSD, one regular HDD) are showing up as external drives (plug-and-play). If I click the "Safely Remove Hardware" icon, I could actually "eject" both of my hard drives.
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Jan 17, 2013
How can you copy one flash drive to another flash drive,on the same computer?
Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 64 bit
Processor: AMD Athlon(tm) II X4 630 Processor, AMD64 Family 16 Model 5 Stepping 2
Processor Count: 4
RAM: 3839 Mb
Graphics Card: ATI Radeon HD 4200, 256 Mb
Hard Drives: C: Total - 702932 MB, Free - 657555 MB; D: Total - 12368 MB, Free - 1523 MB;
Motherboard: FOXCONN, 2AB1
Antivirus: Norton 360, Updated and Enabled
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