What to do if the computer does not see USB? First of all, you need to make sure that the device you need to connect is not damaged. You can verify this very simply: if everything is normal when connecting it to another computer, then the device itself is working properly. In addition, when connecting it to your PC, pay attention to whether the light (LED) lights up. If the computer does not see the phone, the USB ports and cable may be fully functional, but you need to check the settings of the device itself and confirm the possibility of exchanging data between it and the computer (if this option is disabled, the device will not appear on your computer). This also applies to tablets, smartphones, MP3 players, and similar gadgets.
Tip number 1
Many people connect new devices to the USB ports located on the front panel of the system unit. However, very often the front ports do not have a power supply, or there is power, but it is not enough for correct operation. What to do if the computer does not see USB in this situation? Simply reconnect the device to one of the ports that are located on the back.
Tip number 2
Sometimes the system immediately detects a new data storage device, but it displays a message that the device is not recognized and refuses to read the information. Most often, the problem lies, again, in insufficient power and is solved by connecting the media to another port. However, in some cases there is a need to update drivers. The easiest and most convenient way to do this is with specialized programs (say, Everest). It will help you find out the name of your board, and then download the appropriate drivers from the official websites of the manufacturers.
It is also possible that problems occurred due to the fact that Windows assigned the new device a volume label (letter) that is already in use. This is corrected using the control panel tools (right-click on the “My Computer” shortcut, in the menu that appears, select “Management”). On the right you will see the tab "Storage", and in it - "Disk Management". It remains only to find the label of our device, press the right mouse button and select the "Path to disk" ("Change drive letter"). In the window that opens, enter a new character. After that, the problem can be fixed.
Tip number 3
What to do if the computer does not see USB? Although very rare, it still happens that the ability to read data from USB devices is disabled in the BIOS. Most often this is done in online stores and similar establishments so that people, using their media, do not infect computers with viruses. If we are talking about a home PC, you should go into the BIOS, and then check the box that allows the motherboard to turn on USB devices.
Tip number 4
If the computer does not see the information on your drive via USB, this may be due to the presence of malicious virus programs on the PC itself or on the attached device. Here the solution is obvious: you should download a reliable powerful antivirus and conduct a full scan of both the computer itself and the drive.
Tip number 5
This advice, rather, applies to those who can not connect a USB flash drive. What to do if the computer does not see the USB drive, and you have already done everything described above? You need to know that sometimes there is a file system conflict between USB devices and a PC. As a rule, on flash drives these are FAT and FAT32 systems. Modern hard drives support the NTFS system. Using the already known "Disk Management", you can change the file system type of the flash drive to FAT32 or NTFS.
Tip number 6
Finally, you may just need to format the drive. This can be done if it is displayed in the list of connected devices. However, when formatting, all data stored on it will be permanently deleted.