![]() ![]() Next, boot up into safe mode and go to Device Manager. Īlternatively, removing all entries relating to USB in Device Manager and all associated USB drivers will force XP into refreshing the USB driver stack.īegin by unplugging all USB devices, then use Add/Remove Programs in Control Panel to uninstall any USB driver software. Then restart the PC.Ī long shot perhaps, but I recall having similar problems with a USB hub built into my Microsoft keyboard and adding this key seemed to solve it. Under this key, create a new DWORD value called DisableSelectiveSuspend and give it a value of 1. HKEY_LOCAL_MachineSYSTEMCurrentControlSetServicesUsbĬreate the Usb key if it doesn't already exist. This problem was supposedly fixed in SP1 but there is a related registry hack that may still be able to help. When you plug a device back in, it can sometimes fail to 'wake up' properly. In XP, after a USB port isn't used for a long while the USB driver built into the OS sets the OHCI controller to suspend. Unfortunately there is no easy fix.įirstly, it's recommended that you make sure every one of your motherboard drivers are completely up-to-date, but you probably already knew that. It seems that many people are still getting the 'USB Device not Recognized' problem from time to time. PS) Error message appears even after plug out of all usb ports Which folder should I use to create the mentioned key? They are: usbccgp, usbehci, usbhub, usbprint, usbscan, usbstor, usbuhci, usbvideo, I find out that there are many usb related subdivision on left pane. I tried to use the method explained in below thread. Today all of a sudden mouse didn't work and the error message pops up every few seconds. I connect printer, scnner and mouse via USB port. My computer is Sony Vaio laptop with Windows XP. Ive read around the net quite a bit on the topic, and it seems people have encountered similar problems.in their USB ports not recognizing mass storage devices.Īny help on the matter would be fantastic, And of course the hub doesnt want to work. But now.well, it doesnt seem to like it anymore, as per that same error message. The hard drive was working through that port before i tried installing this hub. However, i do not get this error message when plugging my USB printer and ADSL modem into that same port.īoth the external harddrive and USB Hub have their own power supplies. One of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it."įurthermore, when i try to re-connect my external USB hard-drive to the original port at the back of my PC, i get the same error message. I got an error: "USB Device not Recognized. ![]() When i unplugged the hub and replugged it back in, however, the hubĬeased to work. Initially, but with only one of my USB devices which was plugged into it: My ADSL modem. ( i only have 2 spare ports at the back of my PC) So i plugged it in, and it seemed to work How do I disable write protection on a flash drive? Here, we offer both Windows and Mac solutions to help you fix write-protected flash drives easily and quickly.Yesterday morning i went to buy a 4 port powered usb hub. The write protection is added on the USB flash drive by default. The file system is indeed readable and the stored data is accessible on a Mac computer due to the Mac feature. So you format the flash memory stick to make it compatible with the Mac computer. However, sometimes you might want to use it on a Mac computer. You can keep writing and reading data stored inside it. Usually, a pen drive uses the NTFS file system on a Windows computer. When you want to do that, a message might appear - "You cannot copy files to the volume".įormating the file system of the flash drive can cause the write protection. A read-only flash drive won't allow you to copy the file.Remove this write-protection or use another disk". If you start to copy or modify the files on the drive, the pop-up window show you "The disk is write-protected.The common error of "The disk is write-protected" will occur when you trying to format an external disk such as (USB flash drive, SD memory card, or pen drive).You're unable to edit data, delete files, or save information on this drive, unless you find the fixes. Once you get similar messages like the following ones when using the SanDisk flash drive, it means the pen drive becomes read-only and write-protected. Part 4: How to Remove Write Protection from USB Pen Drive on Mac?.Part 3: How to Remove Write Protection from USB Flash Drive on Windows?.Part 1: What Is a Read-Only Flash Drive?. ![]()
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