 Hello everybody! This video will tell you what to do if your flash drive doesn't work. As practice shows, there are a number of factors to cause this problem. For example, everything works fine with a PC, but other devices – a TV, car audio, digital camera, dashboard camera, etc. – can't see your flash drive, or the drive is infected with viruses, and so on. In my previous video How to fix flash drive errors, I have told you about other issues related to problems with a USB drive, a memory card, or an external hard disk. Let us begin with a situation when your flash drive works perfectly with a computer, but you encounter problems when it is connected to other devices, such as a TV, car audio, etc. For example, a device can't see your flash drive. The first possible cause is the drive's incompatible format. Both devices support only FAT file system – FAT16, FAT32, or XFAT, which is rare. So your drive, if your drive is an NTFS1, all your attempts to connect it to a device will go down the drain. The solution is quite simple. All you need is to connect the drive to a computer and format it in FAT file system. If there is any important data on the drive, copy it to the computer. After that, go to the Explorer, right-click on the flash drive, and click on Format. Then select the necessary file system, for example FAT32, choose Quick Format, and click Start. You will see a warning that all data will be deleted. Click OK and wait for the process to finish. As you do that, copy the files you need to the flash drive and reconnect it to the device. The other possible cause is the excessive memory size of the flash drive. Almost all devices have a limit on the maximal size of the drive memory they can work with. It varies depending on a certain device type – 4, 8 or 16 GB. If your drive's memory size is larger than this figure, the device won't be able to see such drive. In this case, you can connect a drive with a smaller memory size. If you can't do that, create a partition with a size suitable for your device on this bigger flash drive. To do it, go to the command prompt as Administrator, enter the command DiskPort, and then ListDisk. Now we can see the list of all disks connected to this computer. My flash drive is marked as Disk5. Before you continue, make sure your flash drive contains no important data. It will be deleted. After that, enter the command SelectDisk5, check the number carefully, or you can erase the wrong disk. And then enter the command Clean. Then enter Create Partition Primary. That is, you are creating a partition. And specify its size in megabytes. For example, 2000 megabytes using the command Size equals 2000. Enter Select Partition 1, you select this partition. Then format the drive in the format you need. For example, in FAT32, with the command Format FS equals FAT32, quick. Open the drive letter by entering Assign letter equals X. You can choose any other letter, which is not assigned already, and finish the work of Disk Part with the command Exit. After that, close the command prompt, and now you can see. My flash drive has only 2 gigabytes now. All you need now is to copy the files to the flash drive and reconnect it to the device. The third possible cause is that the USB port of the TV, car, audio, etc. can have operability problems, or can be a service port, if there are several USB ports in your device. In this case, try reconnecting the flash drive to another board or visit a repair shop. Another cause of possible problems with a flash drive can be about viruses. For example, there is no problem with listening to music with your car, audio, or watching films on TV, when your flash drive is connected, but your computer is anti-virus, flashes a warning that the drive is infected. Another possible variant is that files are not displayed, or your computer can't see this drive at all. In my case, the computer can see that the drive contains some data, but it cannot display it. This problem can be solved by cleaning the viruses with special anti-virus software – Kaspersky, DoctorWeb, and so on, or cleaning the driver's partition table with the command clean and the disk part too, as I have shown before. After all, a flash drive can be out of order because of various physical problems, both since the drive itself or in this particular problem, a particular computer that the drive is connected to. For example, one of the ports in your computer is out of order. In case with desktops, it happens to front the panel USB ports very often. In this case, try reconnecting the flash drive to another port or another computer. Thank you for watching and good luck! If you liked this video, click the Like button below and subscribe to our channel to see more.