Does it have its own power supply? If not get one because USB doesn't supply much power.
Pl.check up the connecting cable or socket etc.,
SOURCE: My PC is not recognizing my WD Passport 120GB USB external drive.
my pc not recognizing my wd passport
SOURCE: Windows XP stopped recongizing eGo
2 things... the USB port is bad, or the USB cable is too long and the HDD isn't getting a good signal.
1. Try another port and see if that works
2. Nip over to WalMart, Circuit City, Micro Center, PC World or Best Buy and get a shorter, Thicker USB cable of the same type - a cable which can provide the signal strength your ext HDD requires.
Also a possibility... The HDD may be 'lost' as Win cannot accept one of that size or the label/signature fell off and it is an orphan. It MUST have a driveletter, and it MUST have a special WIN signature byte on the HDD for it to work.
Bootup as normal, let everything get quiet, then plug in the ext HDD
Rt Click My Computer,
Manage, Device Manager and in the Rt side, highlight the TOP icon. Then
under Help, click the Computer with magnifying glass icon and wait.
This forces your OS to 'Look' for any new devices.
When it finishes looking, look again under My Computer
to see if your new HDD is now there. It will have to be formatted and have a driveletter for
this part to work. Jump down to Disk Manager and see if it is there. You may have to Rt. Click and
import it as a foreign drive or Rt click and give it a Driveletter ;-) If it is not, use a shorter, thicker (more wires) USB cable and try again.
Windows
doesn't like Any HDD without win signatures on them - aka:'foreign
disks' so ANY time this happens, if OS doesn't see it, use disk manager
and Import it, then Rt click it and give it a Diskletter.
SOURCE: Computer no longer recognizes my scanner
If you are using a multi port USB adapter that allows you to plug many devices into one USB port it may interfere with the scanner. Try uninstalling your Epson driver then download the newest one from the Epson website. http://www.epson.com/cgi-bin/Store/support/supDetail.jsp?oid=88368&prodoid=63070478&BV_UseBVCookie=yes&infoType=Downloads&platform=All&x=27&y=14
Install the newest driver first then plug your scanner into a single USB port on the computer instead of the multi port.
SOURCE: MSI K8T Neo 2 not recognize Hitach 1 TB Sata
This is a quote from VIA:
"CHIP FIRM VIA issued a note to its customers telling them of problems with chipset support for hard drives using the Serial ATA II standard.
It said that VT8237 and VT8237R chipsets don't provide forward compatibility for S-ATA II, which is important as hard drive makers are beginning to manufacture this type of drive.
But Via is readying the release of VT8237R Plus, which will solve the problem. This means that motherboard makers that use the former chipset should clear their inventory before September.
Hard drive manufacturers position with S-ATA II is as follows, said Via in its note. Western Digital and Samsung are already shipping these devices, while Seagate and Maxtor will start shipping them during this quarter.
If you connect S-ATA II drives to an old Via chipset which includes the VT8237, VT8237R, VT6420 and VT6421L, the devices won't be detected.
Some mobo makers, such as Epox, have already responded to the problem and have warned their customers to seek the support of hard drive vendors. In a letter to its customers, it said that they should also check the specs of other manufacturers' Via based motherboards."
Testimonial: "Thanks for quick explanation! Now I can return the drive."
SOURCE: My Passport Drive is no longer recognized by windows
Check to see if the drive is available in disk management, if so and it's got a blue bar at the bottom, try changing the drive letter. If not, try the following:
Normally with the passport drives, you receive a shorter USB cable (this is because the drive relies on power from the PC, which your normal length USB cannot offer sufficiently. If you are using a short cable, try connecting the drive to the back of your desktop PC, this generates more power than the ports on the front (the ports on the front are actually hubs). If none of these options work try it on another PC, using the steps above.
If you still have an issue, the drive has most likely failed and you will need to get data recovery done to retrieve your data. If you do so, contact samsung for warranty information, so that your warranty doesn't become void.
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