My external hard disk isnt being recognised by the 4 port pcmcia cardbus which i have. the usb port on my dell inspiron 5160 laptop doesnt work so the cardbus is an alternative. it supports a pendrive but not the external hard disk which incidentally does work on any other system. would appreciate a solution. thanks. merle
I bought an "Extra Value 4-port Hi-speed USB2.0 Cardbus" which works fine with flash drives, but not with my Western Digital Passport External Hard Drive, which itself works fine, but very slowly, on the old USB1.1 ports on my laptop. When plugged in to the PCMCIA cardbus, the hard drive light comes on but it does not spin and it is not recognised by my computer. I have tried it with the extra power cord but with no difference. I.m not sure about the cardbus drivers, but I think they installed all right.
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It should power up with the external power supply if it is working properly; you can remove the batteries and it should still work with the external source. If not, then the power section on the laptop is dead and needs servicing.
If you KNOW it is 5 volts then you only need to make sure that the amp is higher and never lower. Higher amp only means it can work without getting too hot. But the VOLTS MUST BE precise. For polarity it is MOST common to have the center pin PLUS and outer NEG/GND. When I fix laptops and put the powercord wrong nothing happens. When I get it right then lights go on on PC.
New hard drives need to be formatted! So go into the control panel switch to classic view, ( if you are still using category view for the control panel ) open administrative tools, then open computer management. Next open disk management. In disk management your new drive will show as raw, you will be give the option of formatting the drive, select primary partition and format in NTFS.
This will then format the drive, when this has finished your new drive will appear in my computer.
I'm not a great fan of USB ....ever since a USB external hard drive decided to become undetectable halfway through a back up once ....
Since the problem occurred after moving the PC, the first thing that comes to mind is that some wiring has come loose .... but as it's a laptop that seem hardly likely.
Have a look in Device Manager (Control Panel/System/Hardware/Device Manager) ....see if there are any yellow warning marks next to any of the USB devices.
One trick that often works in these cases is to uninstall all the USB Root Hubs in Device Manager (right click each one and select uninstall/remove), then reboot the pC and let Windows reload the devices. Don't ask me why ....but this works 90% of the time.
Your problem is a power overload on the USB 2.0 card. If you plug in a 5volt power supply to the USB 2.0 PCM/CIA card, it will solve your problem. You can also use any USB port on your computer to plug in an A-A USB cable to power the PCM/CIA card and it should resolve the lockup. Also, check and make sure you have enough RAM memory in your comptuer for Windows XP. Recommend 512, but runs much better on 1024 (1 gig) of RAM.