Why a computer or laptop does not see a USB flash drive and a removable hard drive. Why a computer or laptop does not see a flash drive and a removable hard drive A flash drive is only detected in usb 3.0
Despite the widespread cloud technologies and increase the speed of data transfer over the Internet, removable USB media information is still actively used in working with computers. Flash drives of the latest generation transfer large amounts of information at a significant speed and do not depend on the connection, provider and network restrictions. This article describes the most common causes, why the personal computer does not see the USB flash drive, and provides instructions for solving these problems.
Physical problem with flash drive
This is not the most common, but the most obvious reason why the computer does not see the flash drive. Inside these devices are microcircuits, which, like any other electronics, can burn out. It is possible that water got inside the case and caused the contacts to close. Also, due to improper operation, one of the contacts of the plug could be damaged.
There are even special viruses that burn all devices connected to a specific USB port. personal computer. In this case, nothing can be done to help.
Physical problem with the port
Another obvious reason why the computer does not see the USB flash drive lies in problems with the port itself on the computer. The condensate that got inside it could oxidize the contacts, which leads to the loss of their performance. The port may have burned out due to power outages and unstable power supply.
Also, a similar problem may occur if the port is not connected to the motherboard. Similar situations often happen in the case of the front panel of a PC case. The controls and ports located on it must be additionally connected to the motherboard. If the wire came off, or they simply forgot to connect it, nothing will work.
In this case, it is worth checking the wiring inside system block or contact an assembly specialist.
Drivers for USB 3.0
Not so long ago, the USB 3.0 generation that came into use has not yet completely conquered the market. Typically, such ports are installed in cases along with the still relevant, but slower 2.0. They can be identified by the blue strip of plastic inside the connector itself.
The problem may be that in the BIOS versions or "clean" installed operating system drivers are installed only on the second generation. Normal ports in this case work in normal mode, and the "blue" ones will not show any signs of life.
The problem is solved by installing drivers on your motherboard. They can be found on the included DVD or downloaded from the official website of the product manufacturer. You can also try updating the operating system - Wizard windows updates independently pulls up and installs all the necessary patches.
Reinstalling drivers
If you are sure that your ports and a portable device are working, which for some reason the computer does not read, you can try reinstalling the driver on the USB port. Extreme care is advised when handling installed drivers. Incorrect actions can disrupt the stable operation of the OS. It is best to create a Windows restore point before following this guide.
The necessary drivers will be automatically installed on your computer.
Virus infection
If the PC or laptop does not detect the USB flash drive, the problem may lie in some malicious code. Firstly, a script may be running on the computer itself that interferes with the correct operation of the controllers or Windows Explorer. To solve this problem, you need to scan the system for viruses and clean it. This is done using special programs- antiviruses.
If you do not have an antivirus installed, it is highly recommended to download it. you can use free utility from Microsoft- Security Essentials which can be downloaded from this link https://www.microsoft.com/en-us/download/details.aspx?id=5201.
Install the program and run it. Select "Full" from the options menu on the right and click the "Check Now" button. After that, you will need to wait a while while the utility looks for malicious scripts on your system. 
Another problem may be that viruses have infected your removable device, and installed on your computer antivirus program blocks an infected flash drive. In this case, the PC detects the media, but will not work with it until it is cleared. Wait for a while while the antivirus prepares the device for safe operation.
System Configurations
The problem that the PC does not read the flash drive can be caused by specific settings in your Windows. You can change them by editing the entries in system registry:
Not so long ago, I encountered such a problem on an already installed Windows 8.1 operating system. The computer was handed to me in order for me to reinstall the system from Windows 8.1 to Windows 7, and first of all I checked the USB input. Plugged in a flash drive computer mouse, but the laptop did not see any equipment. Then he noticed that he himself USB port blue, and this indicates that it is USB 3.0
It does not work for only one reason, the drivers for USB 3.0 are not installed in the system
To check for the presence of drivers in the system, let's look in the device manager for question marks and other signs next to the installed drivers. If there are no suspicious signs, then the driver is installed in the system, but it is either old or does not fit the operating system.
What are the options for solving the problem?
1. As an option, I uploaded USB 3.0 drivers to my server for motherboard Intel, AMD and Asus. You need to download one of the provided drivers.
How to find out what motherboard you have?
Laptops usually have a sticker like INTEL or AMD.
In Device Manager, under USB Controllers, look for the following:
As you can see in the photo above, I have a motherboard installed with Intel chipset, respectively, the driver needs to be downloaded from this particular manufacturer.
2. Download the program Driver Pack Solution, then install or update USB driver 3.0. The program is completely free and does not require installation, but this1 version requires an internet connection.
3. If the top two options did not help you, you must either install from the disks that were given when you bought the computer, or use my article "Where to download drivers". In this article, I showed how to download firewood from the official websites of manufacturers such as Acer, Samsung, Toshiba and Dell. The video is attached to the article.
But I think that the first option will definitely help in solving this problem.
Question: Lenovo B50-45 (LA-B291P) - Headphone jack not working
platform compal_la-b291p_r1.0
headphone jack not working
dismantled the connector is not broken, there is a cable from the board and there is a small handkerchief, it has USB connectors, a headphone jack, and some other connector, a small button turns on something, if it’s not difficult, tell me what it is.
I checked the cable, it's intact USB power supply+ 5v goes and USB works, but here is the indication on the headphone jack
I disconnected this scarf from the cable, the resistance to ground on all connectors is large more than 20 MoM
then I plugged everything in, turned on the laptop, here is the power supply data
On all legs 0v, except for one there 1v
Answer: Logically.
Question: Flash drive is malfunctioning
Hello dear experts! There is flash drive Silicon Power 4 GB. UFD 2.0 Silicon-Power4G USB Device. I would like to restore its functionality. She either works or she doesn't. I insert it, then the Removable disk is displayed faded in My computer, then it asks to format it. After formatting, I write to it, for example, a 1.5 GB movie and a failure during the recording process, then I need to format it again. Everything will be recorded, but on satellite tuner is not readable, after which the computer again displays faded in My computer. Behaves differently.
Tell me what can be done with it?
Added after 15 minutes
Here is the information on the flash drive from the ChipGenius utility:
Description: USB Mass Storage Device(UFD 2.0 Silicon-Power4G)
Device Type: Mass Storage Device
Protocal Version: USB 2.00
Current Speed: High Speed
Max Current: 200mA
USB Device ID: VID=13FE PID=3E00
Serial Number: 11111141E6BC0300B17E00BD
Device Vendor: UFD 2.0
Device Name: Silicon-Power4G
Device Revision: 0100
Manufacturer: UVD 2.0
Product Model: Silicon-Power4G
Product Revision: PMAP
Controller Vendor: Phison
Controller Part-Number: PS2251-61(PS2261) - F/W 03.08.53
Flash ID code: 98D79892 - Toshiba TC58NVG5T2HTA00
Answer: But I don’t understand what utility I should look for for a flash drive? Help me please? I can't figure it out ((((
Added after 11 minutes
And, that's it, I found the UPTool_Ver2093 (Release) _20150312 utility. I'll try right now!
Added after 14 hours 25 minutes
All succeeded
qvad, thank you for the tip. Only I don’t understand what this program for flashing a flash drive did? Wrote that there was a Low Level Format (Low-level formatting). Please explain what happens with low-level formatting?
As I understand it, all cells of the microcircuit are checked by flash memory, and when broken cells are found, they are somehow blocked by entering the numbers of these broken cells into the controller's EPPROM memory firmware? Am I thinking right, or am I just dumb on the contrary? Thank you!
Question: z575 (LZ575 MB 48.4M502.011) keyboard does not work
It does not work, and neither native, nor new, nor via USb, but this is only in Windows. Anyone reacts to F2, but then it is proposed to enter a password that no one knows or remembers. It is clear that you can fill in the dump, but the laptop is still in front of me, not disassembled, and I don’t want to pick it up yet) Has anyone encountered this behavior?
The mouse works, flash drives work, but the touchpad also doesn’t want to work in any way, but it may have disabled the function. key ... Drivers are all present.
Answer: The new cartoon did not help .. I don’t know what to do anymore. The keyboard was checked, the tracks rang, the connector too .. Yes, and it works in the BIOS, after all
Found a thread that seems to be the same. Yes, that is right.
Question: flash drive crashed
Hello, just 20 minutes ago the flash drive was working. When I installed Windows 7, I needed to convert the C drive (from MBR to GPT) to another format through the console and format it accordingly. Instead of formatting c drive i took by chance and formatted my flash drive (16 gb) through the console and converted it to GPT format and my windows installation 7 sadly ended, as I formatted a USB flash drive with my Windows. Now it does not work, when I insert it into the port, it lights up, everything is fine and the computer shows that new equipment has been found, but when I go to "My Computer" it is not there. Help solve this problem. The flash drive should actually work.
Answer: there is no such thing at all, only Unallocated -> New Simple Volume is.
Added after 6 minutes
Thanks, got it, everything works.
Question: The fan power connector on the video card does not work
Hi all.
Faced this problem...
video card
Has a system of 2 fans (3 pins (blue red black) and 4 pins (blue red black yellow))
They are connected through an adapter into one and then go to the 4 pin connector on the video card ...
So, the problem is that the connectors do not spin from this, although they spin from the connector on the motherboard ...
How is it done? is it worth doing it?
or solder on a molex and not bathe?
Answer:
Message from Fakeoke
solder on molex and not bathe?
I would have done so ... just in case -
Question: Bios does not see a flash drive via USB 3.0
Motherboard MSI 880GMA-E45 (MS-7623). The BIOS version is the latest on the manufacturer's website. Tell me what's wrong? From under the operating system, the flash drive works fine. determined...Flash Transcend 16GB
Answer: not to create new topic I will write here.
Motherboard ASUS M5A78L-M LX3. USB 3.0 does not support. But what does it matter, anyway, a flash drive that supports USB 3.0 should work correctly, right?
On the flash drive, the installation of Windows 8.1, and it is bootable (exFAT), has already been checked and used on other computers (though more modern, laptops).
But when I selected it in the F8 window, only the cursor flickered on dark screen.
Update: everything is ok, this computer just didn't understand exFAT.
Question: The connector for the fan does not work
Such a mother
I took it used, the owner did not mention this, and when I discovered it (a month later) it was too late, and I lost his contacts.
In general, one fan connector does not work. CPU_FAN is fine, it works, the second one does not want to, I tried different coolers. What is the problem, what is it necessary to solder? I don’t want to take it in for repairs for the sake of such a trifle, can I solve it myself (if I don’t know how to solder).
Or do you still have to cut through the molex?
Answer:
KARTEZ, buy a PWM splitter and connect as many turntables to CPU_Fan as you like.
Already bought, thanks
Q: Video card slot not working
In general, the computer does not turn on with the video card, most likely there is a short circuit. I've been trying to fix it for a month (I'd rather not try). And recently I discovered (using a flashlight) that there are no 2 pins (small metal rods) on the video card connector. Armed with a magnifying glass, I saw that one of them was stuck and broken, and the other was simply not there. I have a few questions.
1. Is my motherboard a kirdyk? And does it need to be changed?
2. Whether it is possible to rearrange the processor on other mother?
3. Is it possible to fix the motherboard at all?
(I can’t check the performance of the video card, or the continents with the help of donors (because there are none))
Answer: Odione, even if you have a PCI video card, insert it into another slot.
Are you sure it's the video card?
Motherboard model?
Message from Odione
PC won't turn on with graphics card
Does it turn on without a video card?
Question: Work USB-connectors on a netbook
Hi all!
This situation happened recently. Witnessed setting up a buggy program on a netbook. In the process of connecting the flash drive to the connector, the owner for some reason said that it was impossible to connect devices (mouse, flash drive) to the connectors on the right side of the netbook (as I understood it - in general).
I understand that perhaps the question sounds idiotic, but where did he get this from? I did not ask, because it was not easy to get into, but the question puzzled me. If a person says this, then something is behind it. Perhaps he does not understand something, perhaps I do, but what could be behind this?
Answer: Thanks to all. From everything I read, I conclude that there are no reasons other than possible malfunction or direct intervention in the iron here can not be.
Question: The chip stopped working, but the indicator works
Flash drive stopped working. The indicator on the flash drive itself works, the computer reacts with sound to its connection. All USB ports work - checked. I connected the flash drive to another computer, the same result.
I used a flash drive to watch movies on the TV - now the TV does not recognize it either.
After a breakdown, in the stop menu, the device with "Transcend (F:)" itself was renamed to "Generic USB Flash Disk USB Device (F:)"
I unchecked the folder option in the "do not show hidden files"- the flash drive became visible in the explorer, along with another obscure device with the name (I:)
When you try to open a USB flash drive through the right mouse button, it asks you to insert a disk into the device.
In Disk Management, the flash drive is also not visible, instead of Disk 1 and Disk 2, while, after removing the flash drive, one of the disks disappears and only Disk 1 remains.
I changed the drive letter several times, it didn’t help. In the properties of the flash drive, it says that the device is working fine
When I try to update the driver, it says Windows system determined that the drivers for this device do not need to be updated.
The device manager sees the USB flash drive, but also does not want to help me with anything.
I have already tried all the methods known to me, without using third party programs, but, apparently, I'm so stupid that I could not fix anything.
Therefore, I ask you to help - is there any way to save the device? What to do with it? help me please
Hello everyone Let's talk about flash drives, or rather about their compatibility. So I’ll write like this, well, not really delving into the terms, so that you understand well and so as not to burden you. So what is a flash drive? This is storage. In order for the data to get there, you need a cable, well, a plug, a port. This is roughly speaking the interface. But in order to have maximum comfort, it is necessary that the data gets to the USB flash drive as quickly as possible, as well as read from it. They are constantly working on this, coming up with new data transmission standards.
Today, well, for 2016, the most popular revision is both USB 3.0 and USB 2.0, maybe the latter is even popular. These versions differ mainly in speed and current strength. These are the two main differences. So what can I say here, I can only please, because USB 2.0 and USB 3.0 versions are fully compatible!
That is usb flash drive 3.0 will work fine in a USB 2.0 connector and vice versa. However, it is important to understand that all this will work on USB speed 2.0, to be honest, I don’t remember how much that speed is, but it’s still actually less than they write. I will say on my own, version 3.0 feels two to three times faster than 2.0, but even more in terms of performance.
Speed is one thing, but there is also such a thing as current strength, here it’s already a little more interesting. The USB 2.0 version can provide up to 500mA and the 3.0 version up to 900mA, both are 5V. But here the main thing is that modern hard drives, well, those that connect via USB interface 3.0, then I don't know how they will work if they are connected to port 2.0. They may work well, or they may not. For hard drives quality and stable nutrition is very important. In general, this point is important and you need to take into account, the same applies to recharging from USB ports. Check if there will be any problems, look for information on the Internet, this is just my advice to you
As you can see, speed is one thing and it mostly concerns flash drives, but other USB devices, this is already a bit serious moment. Better to consult. Personally, if I wasn’t sure, I wouldn’t connect a hard USB disk 3.0 to port 2.0, you never know...
