When using the USB flash drive, it keeps saying that the I 0 device is missing, what is the reason

What do you mean? Be specific.

You can do it as follows:

1. Move the mouse to the desktop computer icon, then right-click, select "Manage" in the pop-up menu to open the computer management page, "Storage" option, and then click "Disk Management", you can see the list of drives in the middle pane. Right-click on the USB flash drive and select "Change Drive Letter and Path" in the menu

2. In the subsequent pop-up window to change drive letter and path, we click the U drive letter, and then click the "Change" button.

3. Next, reassign a drive letter in the drive letter drop-down list, and then click "OK."".

4. At this time, a warning box will pop up, asking whether to continue the operation, we can click "Yes".

You can do it as follows:

1. Move the mouse to the desktop computer icon, then right-click, select "Manage" in the pop-up menu to open the computer management page, "Storage" option, and then click "Disk Management", you can see the list of drives in the middle pane. Right-click on the USB flash drive and select "Change Drive Letter and Path" in the menu

2. In the subsequent pop-up window to change drive letter and path, we click the U drive letter, and then click the "Change" button.

3. Next, reassign a drive letter in the drive letter drop-down list, and then click "OK."".

4. At this time, a warning box will pop up, asking whether to continue the operation, we can click "Yes".

Precautions for the use of USB flash drive:

1. The U disk generally has a write protection switch, but it should be switched before the U disk is inserted into the computer interface, and should not be switched when the U disk is working.

2. The U disk has a working status indicator, if it is an indicator light, when it is plugged into the host interface, the light is on to indicate that the power is turned on, and when the light flashes, it means that the data is being read and written. If there are two indicators, there are generally two colors, one is on when the power is turned on, and the other is on when the USB flash drive reads and writes data.

3. Some USB flash drives are still working after the system copy progress bar disappears, and it is strictly forbidden to unplug the USB flash drive when the read/write status light is on. Be sure to wait for the read/write status indicator to stop flashing or turn off before unplugging the USB flash drive.

4. Some brands and models of U disk reserve less space for the file allocation table, and it is easy to report errors when copying a large number of single small files.

Method 1:

1. It may have something to do with forcibly pulling out, check the U disk for errors, right-click the U disk, attributes, tools, errors, and automatically repair. If it can't be fixed, in the bottom left corner, start, run, enter cmd, enter dos, type chkdsk h: f

2. H stands for the drive letter of your U disk, depending on what is your own, and F is the automatic repair parameter. This method is the simplest solution, which can restore the normal operation of the USB flash drive, of course, the data in it can also be used directly, but this method is usually the logical error of the USB disk data to hope for recovery, if it is other hard errors, it is not easy to use.

Method 2: 1. Move the mouse over the desktop computer icon, right-click, and select "Manage" in the pop-up menu.

2. After opening the computer management page, "Storage" option, and then click "Disk Management", you can see the list of drives in the middle pane. Right-click on the USB flash drive and select "Change Drive Letter and Path" in the menu

3. In the subsequent pop-up window to change drive letter and path, we click the U drive letter, and then click the "Change" button.

4. Next, reassign a drive letter in the drive letter drop-down list, and then click "OK".

5. At this time, a warning box will pop up, asking whether to continue the operation, click "Yes".

Through the above explanation, it is not difficult to see that the reason why the U disk cannot be run is due to the wrong disk drive letter, and we only need to reassign a drive letter to the U disk.

1. The reason may be a problem with the graphics card driver: Due to a problem with the device, Windows has stopped it to indicate that the current graphics card driver does not match.

2. Solution:

1. Win7 system enables driver signing is not the same as XP, you need to go to the group policy to start, first open the "Start" menu in the "Run" program, enter the command in the run window, OK, you will enter the group policy interface.

2. In the Group Policyr window, first find and open "User Configuration-> Management Template->System-> Driver Installation" in the left directory, and then in the right window of "Driver Installation", find the item "**Signature of Device Driver", and double-click to enter its properties.

3. After entering the ** signature window of the device driver, the settings here are also different from XP, first set whether to use the driver signature, if you use, you must select the single precursor of "Enabled", which must be selected.

4. After enabling the driver signing, you also need to set which method to enable, whether to ignore, warning or blocking, needless to say, of course, it is "warning", only it, will pop up the blocking window when it is turned on, after setting, press "Apply" and "OK", save and exit.

Next, uninstall the driver of the graphics card in safe mode, then restart the computer into the Windows system, when the pop-up window appears, select "Stop Installation", and the next step is to update the driver by yourself.

The power supply voltage of the U port is insufficient, try another one.

Hello. According to your problem, your last encryption may have been unexpectedly interrupted, resulting in damage to your data files.

It is recommended to try to reinstall the motherboard driver to see, maybe it will be good.