How to Enable USB Port through Regedit in Windows if it is blocked. USB storage device is already installed on the computer, set the Start value in the following registry key to 4 HKEYLOCALMACHINESYSTEMCurrent. Control. SetServicesUsb. Stor. When you do this, the USB storage device does not work when the user connects the device to the computer. To set the Start value, follow these steps Click Start, and then click Run. In the Open box, type regedit, and then click OK. Locate and then click the following registry key HKEYLOCALMACHINESYSTEMCurrent. Control. SetServicesUsb. Stor. In the details pane, double click Start. In the Value data box, type 4, click Hexadecimal if it is not already selected, and then click OK. Comments on this post How to Enable USB Port through Regedit in Windows if it is blocked. Force 600 Series Driver Update MCP67 and ASUS NB F5NX50N Page 1 DriverPack LAN DriverPacks. Forum The support forum for the DriverPacks Restrict access to USB drives. Learn how to disable, enable USB Ports, USB mass storage in Windows 1087 using Registry, Device Manager, Control Panel, Free Tools. Trouble In the past we had received so many problems from the readers who have a problem in copying files on their USB portable devices like pen drives. Hello, I want to block all access to USB removable drives aka flash pen drives because this is the main source of Virus on this office. The domain. Exit Registry Editor. USB drives not recognized Microsoft Community. Got a problem with a Dell Optiplex 3. New installation of Win XP SP2, all Dell drivers downloaded installed, SP3 and all Windows updates applied. USB hard drives and memory sticks give a Device not recognized error in any USB port. Show as Unknown device in Device Manager. USB mouse, keyboard, webcam all work fine in any USB port. USB sticks and USB hard drives work fine when connected to the Dell via a USB hub. Describes methods to prevent users from connecting to a USB storage device that is connected to a Windows XPbased, Windows Server 2003based, or Windows. Google redirect virus removal guide. Here is the ultimate tutorial for manually removing google redirect virus with video instruction. Descripton The USB Device Tree Viewer, short UsbTreeView is based upon the Microsoft USBView sample application found in the Windows Driver Development Kits and now. USB drives all work in other computers and are recognized in the Dell when booting into in Ubuntu with a Live CD. Already tried Uninstall Unknown device in Device Manager, remove usb stick, shut down, unplug computer, then restart. Reinstall chipset drivers re run setup with the overall switch. Fix. It Registry edit as suggested at http suport. Upper. Filters and Lower. Filters Registry values. Deleted all USB devices from Device Manager rebooted. Run the Intel Driver Update Utility. I deleted the existing log so that a new one would be created. This is the contents after plugging in a USB stick Setup. API LogOS Version 5. Service Pack 3. Platform ID 2 NTService Pack 3. Suite 0x. 01. 00. Product Type 1. Architecture x. Driver Install 0. Searching for hardware IDs usbunknown 0. Searching for compatible IDs usbunknown 1. Command line processed C WINDOWSsystem. I0. 22 Found USBUNKNOWN in C WINDOWSinfusb. Device Unknown Device Driver Unknown Device Provider Microsoft Mfg Standard USB Host Controller Section name BADDEVICE. Dev. I0. 23 Actual install section BADDEVICE. Dev. NT. Rank 0x. Effective driver date 0. Device install function DIFSELECTBESTCOMPATDRV. I0. Selected driver installs from section BADDEVICE. Dev in c windowsinfusb. I3. 20 Class GUID of device remains 3. FC9. E6. 0 C4. 65 1. CF 8. 05. 6 4. 44. I0. 60 Set selected driver. I0. Selected best compatible driver. Device install function DIFINSTALLDEVICEFILES. I1. Doing copy only install of USBVID0. PID0. 00. 05 3. BD4. Installing section BADDEVICE. Dev. NT from c windowsinfusb. Power Data Recovery 4.1.1 Serial Key more. Processing Coinstaller registration section BADDEVICE. Dev. NT. Co. Installers. V1. File C WINDOWSINFcertclas. C WINDOWSsystem. Cat. RootF7. 50. E6. C3 3. EE 1. D1 8. 5E5 0. C0. FC2. 95. EEnt. V1. 32 File c windowsinfusb. C WINDOWSsystem. Cat. RootF7. 50. E6. C3 3. EE 1. D1 8. 5E5 0. C0. FC2. 95. EEnt. V1. 32 File c windowsinflayout. C WINDOWSsystem. Cat. RootF7. 50. E6. C3 3. EE 1. D1 8. 5E5 0. C0. FC2. 95. EEnt. Device install function DIFREGISTERCOINSTALLERS. I0. Coinstallers registered. Device install function DIFINSTALLINTERFACES. Installing section BADDEVICE. Dev. NT. Interfaces from c windowsinfusb. I0. 54 Interfaces installed. Device install function DIFINSTALLDEVICE. I1. Doing full install of USBVID0. PID0. 00. 05 3. BD4. I1. Device install of USBVID0. PID0. 00. 05 3. BD4. USB stick into my Dell laptop also running XP SP3 Setup. API LogOS Version 5. Service Pack 3. Platform ID 2 NTService Pack 3. Suite 0x. 01. 00. Product Type 1. Architecture x. Driver Install 0. Searching for hardware IDs usbvid0. Searching for compatible IDs usbclass0. Command line processed C WINDOWSsystem. I0. 22 Found USBClass0. Sub. Class0. 6 Prot5. C WINDOWSinfusbstor. Device USB Mass Storage Device Driver USB Mass Storage Device Provider Microsoft Mfg Compatible USB storage device Section name USBSTORBULK. I0. Actual install section USBSTORBULK. NT. Rank 0x. 00. Effective driver date 0. Device install function DIFSELECTBESTCOMPATDRV. I0. Selected driver installs from section USBSTORBULK in c windowsinfusbstor. I3. 20 Class GUID of device remains 3. FC9. E6. 0 C4. 65 1. CF 8. 05. 6 4. 44. I0. 60 Set selected driver. I0. Selected best compatible driver. Device install function DIFINSTALLDEVICEFILES. I1. Doing copy only install of USBVID0. C PID1. 00. FBB1. Device install function DIFREGISTERCOINSTALLERS. I0. Coinstallers registered. Device install function DIFINSTALLINTERFACES. Installing section USBSTORBULK. NT. Interfaces from c windowsinfusbstor. I0. 54 Interfaces installed. Device install function DIFINSTALLDEVICE. I1. Doing full install of USBVID0. C PID1. 00. FBB1. I1. 21 Device install of USBVID0. C PID1. 00. FBB1. It seems to me that the process is failing right at the start with Windows failing to detect the hardware ID of the USB stick, therefore installing it as an unknown device.