Disable usb windows 7. Prohibiting flash drives using Windows system tools

You can enable USB ports on your laptop through BIOS, Device Manager, Registry Editor, or Group Policy Editor. If access to the YUSB connectors was deliberately prohibited using special software, then you can unblock it in the program where the interface is locked. All methods are available to ordinary users and do not require special training.

Disconnecting unnecessary devices

If the USB ports suddenly stopped working, and you are now looking for how to turn them on, then the first thing to do is to see if there is a lot of the device connected to the laptop. When using a USB hub, the laptop may not be able to provide power to all devices, causing the USB connectors to stop responding. Before doing USB setting in the BIOS, disconnect unnecessary hardware from the laptop and check if the ports work. If nothing has changed, then restart the laptop and enter the BIOS.

Enabling ports in BIOS

For BIOS input when loading, press Delete, F2 or another key depending on the model motherboard... You can see it on the start screen.

In the case of a laptop, this screen does not appear because the function is activated. fast loading... You can temporarily disable this technology in the power supply parameters:

Reboot your computer. Without quick launch you will see all the stages of Windows boot and will be able to get into the BIOS. If this does not work on Windows 8 or 10 with UEFI BIOS, try the following method:

After rebooting, select Diagnostics, then go to Extra options»And open the UEFI firmware options. Click "Restart", the next start will bring up the BIOS UEFI interface.

To configure USB ports in UEFI, go to the "Peripherals" tab and set the "Legacy USB Support" parameter to "Enabled". If you need support for USB 3.0 ports, please activate the corresponding item (USB 3.0 Support).

In the AMI BIOS, go to the "Integrated Peripherals" section and set the "Enabled" value for the four options:

USB EHCI Controller.
USB Mouse Support.
USB Keyboard Support.
Legacy USB Storage Detect.

In Phoenix AwardBIOS, go to the “Advanced” tab and go to the “USB configuration” section. All parameters inside must be set to "Enabled" in order to YUSB ports worked.

In all BIOS versions, to save the configuration, press the F10 key and confirm the selection by writing "Y".

Windows setup

If the ports are enabled in the BIOS, but connected through the interface USB devices are not detected by the system, then check the Registry Editor, Device Manager, and Group Policy Editor. Perhaps, through them, changes were made to the system, due to which the ports are now not working. You should start with the Registry Editor.

If USB is enabled in Registry Editor, check the controller drivers in Device Manager.

If you see an icon next to the controller in the form exclamation mark, if you are sure that the interface is supported in the registry editor, this means that there are problems with the drivers. Try updating your software first:

If the update software controller did not help, update the motherboard driver. Download it from the manufacturer's website and install it manually. Another way to update the drivers for all controllers at once is to remove them from the system. Right click on the controllers and choose Delete. After rebooting, the system will automatically install the controller drivers, so you no longer have to think about how to enable USB ports - they will work anyway.

If only removable devices connected via USB do not work, then check in the Group Policy Editor if the read block is set.

Find the Removable Devices: Disable Read option and set it to Disable. The problem with identifying flash drives and external drives should disappear.

Hardware damage to ports

If the laptop has damaged USB ports or the southbridge on motherboard, then no means will help to enable the interface. Therefore, if the connectors stop working after mechanical impact, the ingress of liquid into the case, short circuit or other negative factors, then you should carry the laptop to the service for diagnostics.

In the case of the system unit, some USB ports can be replaced independently, but in a laptop there is no such possibility, because all the connectors are soldered to the motherboard.

If your PC does not have USB ports and Windows settings and updating the drivers does not help, the controller may have been disabled in the BIOS. In this case, you need to go to the configuration menu and turn everything back on.

There are many different versions BIOS with their interfaces and subtleties of work. Also, a more modern complex can work on your computer - UEFI which supports a full-fledged graphical interface. This article discusses the distributions that are most often installed on motherboards.

Entering BIOS settings

To start changing the configuration, you need to go to the corresponding menu. It can be opened during power up personal computer- before it started Windows boot with hard disk.

Turn on your PC. In case it already works: reboot. Wait sound signal Speaker: a short single beep indicates that all internal components necessary for the computer to function have been detected.

Now you need to click hotkey to call the configuration. This must be done before changing the screen. If you do not have time, and Windows starts loading, reboot. Keys depend on the installed motherboard model and version BIOS firmware... You can find it out in the user manual that comes with the motherboard, on the manufacturer's official website, or look at your PC screen when loading it:

If you don't know the board model, that's okay. Just try pressing the following keys: Tab, Delete, Esc, F1, F2, F8, F10, F11, F12. One of them will probably do..

You don't have to try only 1 option at a time. You can quickly press all the buttons from the list without any problems. One of them will come up and launch the BIOS settings, and the rest will be ignored.

Entering BIOS / UEFI settings on newest PCs

Many modern computers boot up so quickly that you won't be able to hit by pressing the keys when turning on. This is also true for laptops. That's why latest versions Windows OS has got a new launching feature. Let's show it using the example of Windows 8.1.

Your computer or laptop will reboot into setup mode. After restarting your PC, you will also be able to select option to start from a USB stick or DVD disc.

Menu navigation

Almost all BIOS versions lack graphical interface... This means that you only have to work with the keyboard, as, for example, in the Windows console. Navigation is carried out using the arrows "up-down" and "right" - "left". To open any section, use the Enter key to go back - "Escape". A small reminder of the keys used is always shown on the screen.

Complex of microprograms UEFI installed on the most expensive and powerful motherboards. It supports large quantity drivers and knows how to work with a mouse... Its interface will be familiar Windows users and other modern operating systems.

Each version has its own interface and sets of options. Even the names of the same parameters may differ. The article further describes several popular BIOS releases.

AMI BIOS

A very common option that can be found on many modern computers... The main menu is divided into 2 parts: a list of categories and various actions like exiting or saving. You will be working on the left side.

You need to go to the section called " Integrated peripherals". There is no Russian-language version of the interface, so all commands are only in English. Use the Down Arrow to highlight the item and press Enter.

Here you need to include ( Enabled) 4 options:

USB EHCI controller- the main controller. If the motherboard has ports version 3.0, this item will be divided into 2 parts: "Controller" and "Controller 2.0";
USB Keyboard Support- keyboard support;
USB Mouse Support- mouse support;
- work with external data storage: flash drives, disk drives, disks of smartphones and digital cameras.

In some older versions, there are only 2 items " USB controller" and " Legacy USB storage support».

When you're done with the settings, press the F10 key to save your changes and restart your computer.

Phoenix AwardBIOS

Another popular version that can often be found on modern laptops... Does not have home page like an AMI, but with convenient thematic tabs at the top. You can navigate between sections using the "left" - "right" arrows, and between items - using the "up" and "down".

Go to the section " Advanced"With the" Right "arrow. Find the category “ USB configuration". All items in this section must be translated into the position " Enabled". In some versions, the category " USB configuration"Can be located in the" Peripherals"And not in" Advanced ".

To exit the menu, press F10 and confirm the exit.

AMI BIOS for Asus

AMI version used on Asus laptops... Externally very similar to Phoenix - a similar bookmarks bar. Settings USB are in the section " Advanced". Go there, enable all options and exit with the F10 button.

UEFI

Contrary to popular belief, UEFI is not part of the BIOS. Rather, it can be called a more advanced, but less popular competitor. Exists a large number of different versions, each with their own interfaces. However, the control here is similar to the familiar Windows, so you can easily find the options you need.

Windows settings

If at the BIOS level all ports and controllers are enabled, but the USB ports still do not work, the problem may be in the settings of your Windows system.

First, try just disconnect and reconnect the device... This will cause the drivers to be checked for correctness. If something is wrong with them, Windows will try to reinstall them.

If nothing happens when reconnecting, try turn on the controller in the Windows registry. To do this, you need to do the following:

Video: how to configure any BIOS to boot from a USB flash drive

Outsiders, unauthorized usb media in work computers can cause great harm to the entire corporate local network: from disabling the network as a whole, to stealing corporate data.

Therefore, many system administrators do not allow "users" to use the so-called "flash drives" on workstations and, if possible, try to disable usb ports... This is not as difficult as it seems at first glance (and it is not even required to fill the usb ports with polyurethane foam, although this also happens).

You can just disable or even remove the "usb controller" in the "Device Manager", but the usual installation of drivers will nullify all efforts.

How to programmatically disable the usb port?

The method described below concerns editing the registry to block usb media, but without touching the keyboard, mouse and other working components of the computer.

So, you can disable usb ports on your computer as follows:

Open the registry by running the "regedit" command;

- further, in the directory go to the address "HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ USBSTOR";

- in the right part of the window find the line "Start" and open it by double-clicking or right-clicking and "Change";

- by default, the “Value” line must contain the number “3” ie she allows usb connection media to the computer with preinstalled usb controller drivers;
- so, it is in this line - "Value" and you need to change the number "3" to "4", which will block the connected usb media.

It is necessary to change the registry in this way on all computers in the local network.

How to turn off usb power on windows computer?

AND important point: Requires restriction of user rights to access the registry editor, because to allow usb media to be connected, you only need to change the value back to the number "3".

You can simply limit yourself to setting a prohibition on editing the registry using the "Group Policy", and set the value "Deny access to registry editing tools" (or "Make the registry editing tools unavailable")

This item is located in the section " Group policy"-" User configuration "-" Administrative templates "-" System "

USB ports can be disabled without using third-party programs... Using Windows tools, you can turn off all USB ports at once, or those that need to be turned off at the moment.

Theft confidential information from users' computers is currently extremely relevant. Disconnecting USB ports may be required to prevent data leakage. Very often we have to connect various external storage devices to a PC, in particular through USB ports. These external devices may contain malicious code, which, in fact, is the reason for the "leak" of confidential data into the hands of "malware". Today we will tell you how you can teach your computer to quickly disconnect USB ports without having to install and use third-party programs.

To implement our plan, we need to make some changes to the Windows registry. To do this, first we need to open it, for this in the search engine Windows prompt(in Windows XP-7 search bar located in the "Start" menu, in Windows 8 on the panel, as shown in the figure below) you must enter the regedit command, press the "Enter" key and select the registry editor regedit.exe in the search results.

In the Registry Editor window that opens on your screen, to start disabling USB ports, go to the "UsbStor" registry key by expanding the HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services sections in sequence. Find in the final section the parameter “Start”, click on it with the left mouse button and in context menu select “Change”, and change its value from “3” to “4”, where “3” is the default value of the parameter.

After the changes made to the registry, the flash drive connected to the computer via the USB port will be detected by the system as before, but it will not automatically connect to it. In other words, it will be impossible to write data from a flash drive or run any programs from it. If you need to return the settings of the USB ports to the original ones, before that it will be enough to change the value of the “Start” parameter to the previous one, that is, “3”. In this case, you do not need to restart your computer for the changes you made to take effect.

Disable certain USB ports

There are times when it is not possible to disable all USB ports in the system at once and only some of the USB ports need to be disabled. In this case, you can use another method.

Launch “Device Manager” on your computer, then find in it and go to the line “USB Controllers”. By the way, to open the "Device Manager" just press the key combination "Win" + "Pause" and in the window that opens, click on the corresponding link in the left part of it.

Now in the newly opened window “Properties USB ports”Go to the“ Drivers ”tab and click on the“ Disable ”button in it. All is ready!

We hope that you have found the answer to your question - “how to disable USB ports” and now, depending on the situation, you can disable them all at once, or only those that you think are necessary.

First, you need to figure out why you may need to disable USB ports on your computer. Everything is pretty simple here. With the advent of miniature USB storage devices, the need arose to prevent data leakage from computers. Using a regular flash drive or portable hard drive, you can easily steal any information. To prevent such incidents, it is necessary to completely disable the USB ports. Of course, everyone may have their own reasons for disabling ports, but this is not so important. There are several ways to disable USB ports on your computer below.

Disable USB ports in BIOS settings

In fact, everything is quite simple: go to BIOS settings and disable all ports, or those that are needed. The nuance is that on this moment there are several BIOS versions"ah, and disabling ports in each is sometimes different.

BIOS Award... We go into the BIOS settings and select the item Integrated Peripherals. Go to this menu... Then we just find the items: USB EHCI Controller, USB Keyboard Support, USB Mouse Support and Legacy USB storage detect and disable them by selecting the parameter Disabled... Then we just save the settings and restart the computer;

Phoenix-Award and AMI BIOS... We go into the settings and select the item Advanced (sometimes in some versions there may be a Peripherals item) or Advanced BIOS Features. Next, go to the menu USB Configuration. Next, turn off all USB items. Save the settings and restart the computer;

UEFI... More modern panel. Go to the menu Peripherals or Advanced... Selecting items Legacy USB Support and USB 3.0 Support and disable them. Next, we save the settings and restart the PC.

Note! In some versions, the menu items may differ slightly in name, but that's okay, just go through all the menus and find the USB settings.

Disable USB using the registry

This is a more appropriate way. In the registry, you can disable access of USB ports to specific devices rather than the ports themselves. At a time when almost everything is connected via USB, including a mouse and keyboard, then this method will be preferable. You can simply disable port access specifically to flash drives, but at the same time computer mouse will work fine.

Opening the Registry Editor: keyboard shortcut Win + R, enter the command regedit and click OK... Next, go to the next section:

HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ USBSTOR

Find the item Start. Open it and specify a value 4 ... Save your settings and restart your computer. This section closes access external storage to the port.

Note! If the computer is not installed USB driver controller, then the value Start will automatically change to value 3 as soon as the device is connected to the port.

Disable USB via Device Manager

Open up Device Manager: right click on My computer, open Properties, Further Device Manager... Open the menu USB controllers... Right-click and select the item in the context menu Disable.

Important! The option of removing drivers for USB controllers will not work, because the first time the device is connected to the port, Windows will start installing the drivers.

Disconnect USB using Windows files

Denying access using the Local Group Policy Editor

You can also prohibit reading and writing.

Additionally

It is also worth mentioning that there are two more ways to restrict access to ports: restrict access using third-party programs and physically disable ports.

There are plenty of third-party software on the Internet, and each is configured in its own way, so there is no point in describing this method in the article. All you need is to find the desired program and instructions for it.

As for the physical disconnection of ports, this method will work only with the ports on the front panel of the system unit. Open up system unit and carefully disconnect the wires going to the ports.