Computer USB disk can not use the normal way to deal with

First, into the system of disk Management, to see if the U disk letter is deleted.

Right-click on "My Computer", select "Manage" and select "Disk Management" in the "Computer Management" window that pops up:
Here to see if there is a U disk (no words repeat the first and second steps), the U disk is assigned to the letter, if there is no letter, right click on it, select "Add drive name (letter)", OK.

Second, enter Safe mode, see whether normal.

Third, the host USB port power supply is insufficient, check whether the host USB port ash or oxidation, other USB devices on the host is normal. If it is a desktop, it is recommended to insert a U disk into the rear of the chassis USB port to try.

Four, the correct installation of USB drive method

We right-click on the desktop computer and click "Admin" and we'll see "usb2.0" under other co-ordination and then we'll right-click and select "Update driver software" to try.

Add:

Problem one: U disk for a long time no use, inserted into the USB interface yesterday, U disk lights on, the system also detects a USB device, but the letter has not come out, tried a few times is so, I would like to ask if the U disk is broken? Is there any software that can be repaired?

Question: First consider is not the problem of voltage is not enough, we suggest that you switch to a USB interface and try again, preferably not plugged into the USB HUB, so easy to voltage. If it is not the problem of voltage, then it is necessary to consider the U disk itself problem. You can use U disk mass production tool on the U disk Master chip data rewriting, first of all, using the Chipgenius Volume Production tool version of the viewer read out the "MP ver/firmware Version/firmware date" and other information, and then according to the model to Baidu to find the corresponding U disk production tools, Then the amount of production tools on the U disk for mass production steps can be, under normal circumstances, as long as it is not a U disk hardware damage, can be repaired by mass production tools.

Question two: just bought a USB 3.0 16GB flash drive, however, if you copy a USB disk in a large file of 8GB, error. Don't know what's going on?

Problem answer: First, the U disk reformatting a try. If not, there may be a U disk capacity is false, no 16GB, and only 8GB. Find a business change or refund in time.