External Hard Drive Found As Unknown Device?
Sep 8, 2012
I have a LaCie external hard drive which works fine on other pc's running Windows 7 Ultimate, but on this one it is an "unknown device". I have tried it in different ports but with the same result. I've checked with Windows Compatability and the exact model is listed there as being compatible. I've been to the manufacturer's website but there are no drivers available.I have the same problem with any USB device I plug into any port. I have tried a complete Windows re-install from a different CD but it made no difference.The only USB devices that work are the keyboard and mouse.I have given the LaCie HD as an example because I am hoping that if I can get a specific device to work, I may be able to solve the problem with others.
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Apr 8, 2011
I have discovered that my external hard drive is showing "unknown file system" hence why it will not show anywhere on the computer for instance under disk management or my computer, is there any way to get around this? like can a file system be recovered?
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Jun 26, 2012
Having a problem with an unknown device under Other devices. I tried scanning for hardware changes and updating the device but keeps coming up with no driver found. As well as the fps of a game I play has dropped significantly from where it was a day ago and get prompted the game is having trouble recognizing my graphics card this has never happened before.
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May 6, 2012
Can see my external hard drive in device manager but not in my computer
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Jan 9, 2013
can see my external hard drive in device manager, but not able to access it
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Dec 11, 2012
I have a 3 Tera HDD. (WD My Book Essential (USB 3.0)). Last night I uninstalled a software which I do not remember its name by mistake. Apparently it was related to my WD hard drive for my computer does not recognize it anymore. I checked my device manager; "Base System Device" is not recognized. I ran windows troubleshooting. It says "Base System Device" Driver is not found. I searched a lot, but I couldn't find the driver. I also ran drive checker software.
It says:
Device name: JMB38X SD/MMC Host Controller
File name: MSI_GX633_Card For Windows 7.zip
Hardware ID: PCIVEN_197B&DEV_2382
I could not find this too. I also have another portable WD which is still recognized by my computer.
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Jan 22, 2013
Drive was fine in XP, new computer with 7, USB plug-in shows "USB Device Not Recognized?" The driver is up to date, per driver upgrade site?
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Oct 19, 2012
I just bought a new ASUS computer with Windows 7. I have a Macbook Pro and would like to transfer my photos and music onto my new computer. I have 2 external hard drives that work perfectly fine on my mac as well as other PCs. When I plug either of my external hard drives in they are recognized in device manager and say they are working properly but are not recognized in disk manager or under my computer...
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Oct 23, 2011
.I didn't wait for the computer to tell me it was ok to remove the drive in the usb port. Now my computer no longer recognizes the external drive After removing my external hard drive (without the ok) my computer no longer recognizes the external hard drive. What do I do.
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Aug 11, 2011
i've got 2 extra 1TB Seagate drive:[URL]I use these to make backups of my 3 hard drives (1 x SSD, 1 hybrid, and 1 SATA). I brought this new machine back in April, and it was working fine up until then. However, after trying to install some software (which didn't wanna install in the end anyway, due to it being rubbish!), I can now no longer see these drives on my PC The weird part too - is that my Win7 laptop has exactly the same issue ... but my brothers Vista laptop, and Win7 PC see them just fine!To start with I was thinking the drive had gone faulty (as it wasn't working on both my machines), but after testing it on my brothers stuff it prooved they are both working fine The USB's I'm using to connect it to are fine (They work for USB sticks and other USB kit) ... so I'm at a bit of a loss as to what it could be? The even weirder thing - is that my brothers 500gb external drive (can't remember what make that was, but its not Seagate) works just fine!Its driving me up the wall as I can't do my daily backups (I'm a software developer, so having a current backup of my PC incase of a fatal mess up with my system is vital for me)
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Jun 8, 2011
I reinstalled my hp notebook after getting message boot disk not found (3F0). I am running System Type x64 hp pavilion Dv7 with a AMD Phenom P840 Triple Core Processor.After restoring it from the recovery disk to.. from box condition and reloading all updates and drivers system still gives me the same message. The first time i reinstalled it to factory default and it didn't work. That is why the second time I did the from the box installation. I think I have created more than one operating system now and I don't know how to fix the problem. When it was originally loaded from Staples in January this year it wasn't really running great but I thought it was just my wireless connection was slow. Then it started to take a long time to do anything, on or offline. I went into the updates history from Microsoft and noticed that the first 14 updates they did failed. One of them was for display amd M880G with ati mobility. The computer began lagging worse and worse and starting to become unstable. That was when i decided to run the recovery disk not knowing that it was creating more hard disks. The message is back and now there is more than one hard disk and the last one i did was complete and all updates drivers were successful. I am still getting the boot devise not found message and sometimes it won't start at all.
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Apr 22, 2012
I recently bought a lop top and have seen the blue s reen 3 times. When downloading AVG anti virus a start up test popped up and said boot drive not found also said Hard disk (3FO) not found please help me fix and down load drivers that I need.
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Feb 3, 2012
There is a unknown 'portable' device (F:/) on my computer which I dont recognize. I saw it when I was about to scan my computer with Norton and was about to select which drive I wanted to scan, if I show hidden files it also shows up under My Computer, but I cant access it.... What could cause this?
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Nov 27, 2012
I have a Buffalo HD-LB3 3TB external harddrive. My main goal is to get it to work with my xbox 360. I was able to get it to work on my blueray player but it is not found by my Xbox. I have formatted it to Fat32 and I have partitioned it into two pieces, 1.8 TB and 1.1 TB. Still nothing is working.
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Mar 30, 2012
I have an internal hard disk not in use ,and I would like to make it as external disk !I looked on the net and I found I should have the " encelsure " butt I think I wont find it here in my city .So is there another way ? like usb -esata cable
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Mar 4, 2010
Me and my brother built me a new computer from scratch (he did the building - i did the watching). I purchased an internal hard drive from Overclockers UK. It's a Samsung 1TB drive. I also have a 64 Solid-state drive in there as my primary hard drive that Windows was installed on and a couple of programs are installed on. My storage disk (the 1TB disk) is for all my music/films etc. Whenever I drag and drop a file into the Samsung hard-drive - it copies it rather than moves it instantly.When I had a laptop, I had 3 external hard drives and this is the way it copied files onto them.how I can get the internal drive to stop acting like an external drive?
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Apr 19, 2011
My hardrive from my old laptop is in an external hard drive because i want to get the pics and info of it onto my new laptop, i have plugged the enclosure in to the lap[top with both USB's but only one red loight is on the external hard drive and it is not in my computer, it bleeps on my laptop when it is plkugged in thoy please help me get my docs bakc
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Jun 5, 2009
i am trying to install windows 7 on old computer, it's AMD sempron with ABIT motherbord NF7. i have 160 SATA 2 hard drive. the installation start but when i need to choose hard drive for source it's says that no hard drive found. what can i do?
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Jan 13, 2013
I recently bought two Sandisk SSD's to run in RAID for my rapidly aging computer. I'm currently installing windows 7 (x64) on my new drives and I get the "no device drivers found" message that has haunted me in the past. I remember previously I resolved this issue on my Samsung F1 by setting the drive configuration in my BIOS to IDE, of course, this is not possible now as it must be set to RAID.
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Sep 9, 2010
I just added a new hard drive to replace the old one that is apparently corrupted. And I'm not sure what I did wrong. I was told to unplug the power supply and the old hd. Add the new one, and power it back up with the Windows 7 installation dvd. Did that and in trying to change the order in witch it boots to cd-rom, it shows sata hd not present? I don't know why, I replaced the cords in the right place. Do I need to configure it, if so how?
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Jul 20, 2011
why when i try to burn my music files to a cd it tells me the file is not located on my hard drive or anywhere else
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Jul 4, 2012
During the reinstallation of Windows 7, the operating system did not find the hdd. on some forum I visit they have to say download the drivers. but I do not know where to find its drivers. [code]
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Aug 1, 2009
How do i figure out what driver or even component windows wants software for when in the device manager under other devices it lists an unknown device and windows update cannot find anything.
Oh and is it appropriate for me to use this topic to ask another question regarding explorer.exe as while i am inside a folder i delete (by choosing delete from the context menu in the tree view) while inside that folder on this particular laptop PC explorer. always crashes, collect information, sends it and restarts explorer. I have not experienced this problem on any other pc running any version of windows 7, oh and the same happened with build 7264 x32 and the current install of build 7600 x64.
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Jun 15, 2011
So yesterday I was online and uploaded a pic to Twitpic. Everything froze up so after a bit I decided to restart. When it restarted it went right into system repair. I let that run ALL NIGHT LONG. In the morning, it asked if I wanted to do a system restore and I said yes. But it said I had no restore points. I knew that wasn't right so I ran through the memory check option and then the hard drive check and was told memory was fine but now I don't have a hard drive found or an operating system. Any clue what has happened or how to restore everything?
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Aug 12, 2012
I have been doing some searches using the search box that comes up when you press the colorful button on the bottom left. It finds nothing. I can have folders and WORD documents on my desktop, and it always comes up now with nothing found. If I create a test Folder, or WORD document, put on the Desktop, it won't find them. Always used to work fine. Only difference now is that I put in a new HD after the old one failed. Everything else seems to work fine.
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Aug 21, 2012
I have a USB external hard drive that I keep all my documents etc on (had it for years)I upgraded from Vista Home to & Home Premium then had to upgrade recently to Professional to run my Sage. Through all these upgrades my ext. drive ran fine. Occasionally the drvie letter would change if I had something else plugged into the USB, this was always easily corected in disk management by changing the drive path.The connection on the case packed up so I had to get the drive put into a new case, now when I plug it in the drive is assigned G instead of F, I tried to change the drive letter allocation in Disk Management but it won't let me as the program still thinks I have a second ext. hard drive which is labelled F. I suspect this has happened because when the usb connection broke the drive was disconnected suddenly instead of a proper eject.How do I get Disk Management to remove the inactive drive - i can't find any obvious way - eject, delete etc are all missing when I click on tools or tasks.
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Nov 13, 2012
Low disk space, Can transfer data on D drive to an external hard drive
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Jun 25, 2011
I can see my external hard drive in device manager, but not in my comp
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Jun 16, 2011
i have been trying to install a RAID array on my system, and due to some complications ended up having to reinstall windoiws from the master CD, now i noticve it has created a drive called "system reserved" - the volume is only 99.8 MB - when i open the drive it contains nothing at all? what is it / how do i get rid of it?
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Nov 19, 2012
I got a new hard drive for my HP Pavilion DV6T-6000. Installed windows 7 ultimate and a bunch of drivers from HP's drivers section for my computer and I still have this unkown device. It wasn't there on my old drive so something isn't right here.
Location: on Microsoft ACPI-Compliant System
Status: The drivers for this device are not installed. (Code 28) There is no driver selected for the device information set or element. To find a driver for this device, click Update Driver. Hardware ID:ACPIHPQ0004
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Jan 5, 2013
First I want to say that the drive works without problems at the correct speed. The problems come upon disconnect. I also want to to stress that USB 2.0 discs are working flawlessly. If I use safe eject and the look in the device manager I get an error 47 saying that it has been shut down but not disconnected, it also says I can rectify it by disconnecting and reconnecting but this does not work. If I do so the drive will not be recognized. The enclosure has a power switch. After a safe eject I have tried both pulling the USB cable while power is still on and also going the other way by first shutting the power down. In both cases the error 47 shows in device manager. When this happens the CPU load goes up to about 20% and stays that way when it before was around 0 at idle. If I reboot the drive reconnects and I have no problem with it unless I try to safely eject it again.
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