Articles by "Hardware Tips in English"
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Are you getting a “USB device not recognized” error whenever you plug in a USB mouse, keyboard, camera, or another device? I can’t live without USB ports and currently have 5 ports on my computer so that I can connect my mouse, keyboard, camera, phone, and printer to it all at once!

For those of you with even more USB gadgets, you probably have connected a USB hub to one of your USB ports so that can you connect even more devices. Most of the time this works great, but occasionally your computer might stop recognizing USB devices. The odd thing about this error is that the ports are working just fine, as I was able to still charge my cell phone without a problem, but couldn’t get my camera recognized using the same port.

how to solve usb device not recognized, usb device, usb device not recognized

After spending a lot of time and trying a bunch of different ways to fix the problem, only one solution ended up working for me. I’ll mention that solution first, but will also mention the other possible solutions, as the first solution may not fix the problem for everyone.

Method 1 – Unplug Computer

So how did I finally fix the problem? Well, if you are lucky, it’s a super simple solution! Try this method first and if it works, you’ll have saved a lot of time.

Simply unplug your computer from the power supply. Yes, that is it! Note that this does not mean just turning off your computer using the power button because most modern computers don’t actually turn off completely and the motherboard will still get power. This is useful sometimes if you want to remotely wake up a computer, etc.

The motherboard is where all of the hardware of the computer connects to, including the USB ports. Sometimes the motherboard needs to be “rebooted” because things can go wrong, i.e. all or some USB ports suddenly stop working. The small microprocessor on the motherboard will reload the drivers and your USB ports should hopefully be recognizing devices again.

So first turn off your computer using the Shut Down option in Windows or pressing the power button and then UNPLUG the PC from the wall outlet. Let it sit for several minutes and then plug it back in.

Method 2 – Update Device Driver

If Windows is not able to recognize the device, you may also see in Device Manager that the device shows up as an “Unknown Device”. You can get to Device Manager by clicking on Start and typing in devmgmt.msc or by going to Control Panel and clicking on Device Manager.

USB Device Not Recognized in Windows, Device Not Recognized

In that case, you should right-click on Unknown Device, click on Properties, then the Driver tab and then click Update Driver.

update driver usb, usb problem

If this doesn’t work, you can also try to download the driver for your device from the manufacturer’s website. If the USB device is just a flash drive, then it’s probably not a driver issue. However, if you are installing a USB printer, drawing pad, etc, then it might be worth downloading the driver for that specific device.

Method 3 – Restart & Disconnect USB Devices

The next thing you can try is to disconnect all USB devices and then restart the machine. once you have restarted, try to connect the USB device that was causing the problem.

If that particular USB port doesn’t recognize it, try another one. If the device is recognized by a different USB port, there could be a hardware problem with one of the USB ports. If no USB port recognizes the device, then keep reading because it’s probably something else.

Method 4 – USB Root Hub

Another thing you can try is to open Device Manager, expand USB Serial Bus Controllers, right-click on USB Root Hub and then click on Properties.

USB Root Hub solution

Click on the Power Management tab and uncheck the Allow the computer to turn off this device to save power box. If you have more than one USB Root Hub listed, you need to repeat these steps for each one.

usb root hub problem solution

Click OK and then restart your computer. Try to reconnect the USB device and see if it is recognized. If not, go back to the power management tab for each one and check the box again. If it does recognize the device, then leave them unchecked.

Method 5 – Connect Directly to PC

A friend of mine ran into this issue and the cause ended up being his USB hub. He only had three USB ports on his computer, so he bought a hub where he could connect an additional 8 USB devices.

I guess this proved too much for his computer and it just started sporadically not recognizing various devices. After removing the hub and connecting the device directly to the computer, it worked just fine.

We haven’t really been able to find any other solution to this problem other than reducing the number of items connected to the hub. Actually, one other solution worked, but it meant having to buy a new USB hub with more power.

If you are having this problem with Windows 8 or Windows 8.1, then you might be in luck. Microsoft has released a fix for Windows 8 not detecting USB devices properly. Make sure to install this hotfix if running Windows 8.

Method 6 – USB Troubleshooter

If nothing has worked so far, you can download the Windows USB Troubleshooter Fixit tool. It’s a free tool that works with Windows XP, Vista and 7.

USB Troubleshooter

You can either have the troubleshooter fix the problems for you or select the fixes yourself. I would just let it fix them for you since the choices can sometimes be confusing and technical for the novice user.

Method 7 – Update Generic USB Hub

If you are getting the Unknown Device error in Device Manager, you can also try one other thing. Open Device Manager and then expand Universal Serial Bus Controllers.

You should see at least one item called Generic USB Hub. On some computers, you might see two, three or more of these. Right-click on the first one and choose Update Driver Software.

Update Generic USB Hub

When the update dialog pops up, choose to Browse my computer for driver software.


Then click on Let me pick from a list of device drivers on my computer at the bottom.


From the list, select Generic USB Hub. Normally, there won’t be anything else listed except for that one choice. Click Next and then click Close once it finishes installing it.

At this point, the Device Manager screen should refresh and either the unknown device will still be there or it may now be recognized. If it’s still showing as not recognized, then you repeat the process for each Generic USB Hub listed.

Method 8 – Uninstall USB Devices

As a last resort, you can also try uninstalling all USB devices from your system and then restarting. I mention this last because even though Windows is supposed to automatically recognize the USB controllers, hubs and devices automatically, it can sometimes fail and you’ll end up with no USB ports working.

I had a computer with 6 USB ports and only one port would not work properly. I uninstalled everything under USB Serial Bus Controllers in Device Manager and restarted. Instead of re-detecting everything, I was left with no USB port working, so be careful when using this method.

Go to Device Manager and start uninstalling each item from under USB Serial Bus Controllers. Before you start with anything that is already working, uninstall the items with exclamation points or that are listed as Unknown Device.

Unknown usb Device

Method 9 – Uninstall Hidden Devices

By default, Device Manager doesn’t show all devices that have been installed to the system. It basically only shows the ones that are currently connected. However, if you installed a USB printer earlier and now no longer use it, it will still be installed, but won’t show up in Device Manager.

Certain hidden or ghost USB devices can cause conflicts with current USB devices and therefore lead to this error. You can view hidden devices in Device Manager by first opening a command prompt and then typing the following two commands:

Hidden Devices



start devmgmt.msc

Once Device Manager loads, you need to click on View and then click on Show Hidden Devices.

Show Hidden Devices

Now you want to expand Imaging Devices, Universal Serial Bus Controllers and Unknown Devices. If you see anything listed there that is greyed out or that says unknown device, go ahead and right-click on them and choose Uninstall. Hopefully, removing older devices will allow newer devices to work properly.

Method 10 – Restart

Sometimes, a simple reboot fix unrecognized USB device. Plug your USB device out, wait for a few minutes, then restart your computer. Plug your USB device back in again. 

Method 11 – Try a different computer

Try plug your USB device into a different computer. If it doesn’t work on the second PC, your device could be at fault. You may want to get it repaired or buy a new one. 

Other Possible Solutions

If nothing has worked until this point, it’s pretty safe to say there could be a problem with the actual hardware. The best thing to do is to connect the device to another computer and see if it works or not. If not, then it’s definitely an issue with the device.

Possible Solution #1 – The other possible solutions are to try a different USB cable if you have one lying around. If not, just buy a new cheap USB cable from Amazon: A to B, A to Micro B, A to Mini B, or A to A. This is a fairly rare problem, but I have seen it occur a few times over my many years doing technical support.

Possible Solution # 2 – Another possible solution is to take the device, connect it to another machine and if it does recognize the device properly, to then eject it properly from that computer before reconnecting it to the original computer. I’ve seen this problem occur with several flash drives that were unplugged without ejecting properly. After connecting them to another computer and ejecting them properly from there, they suddenly started to show up on the original computer that was not recognizing them.

Possible Solution #3 – A few people have had luck getting rid of this problem by updating the BIOS. I’ve already written an article about whether it’s a good idea or not to update the BIOS, but in this case, it might be worth a try. You can also go into the BIOS and disable USB, restart the computer and then enable USB again. The only thing you need to make sure is that you have a PS2 port on your computer, otherwise you won’t be able to do anything once you disable USB in the BIOS if your keyboard and mouse are connected via USB.

Hopefully, one of the many solutions above will solve your USB problem. If not, post a comment and I’ll try to help. Enjoy!

You can see this video

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Whether there is a home, office or school computer all over the place and also those who work on it, but have you noticed computer cleaning, if you do not pay attention to the cleanliness of your computer, then you reduce his life The dust that is deposited on its chip and board can cause great damage to it. Here are some tips for computer cleaning

Computer Cleaning Tips in English, Computer Cleaning,Cleaning Tips

Computer Cleaning Tips in English

➤ Turn off the computer before cleaning.

➤ Use a spray like Colleen to clean the computer's outer cleanness, do not use water anytime, water can spoil your old computer.

➤ Dust is damaging to it, for that you use a vacuum cleaner, if there is no vacuum cleaner, then use the air blower, air blower comes from 300 to 1000 bucks, but your gadgets are clean and clean. Keeps secure.

➤ Apart from this, there is another gadget that does not clean the electricity, it is compressed air can also be used in any place where there is no electrical system.

➤ The dust in the computer is very fine, so before covering it, cover your mouth with a cloth properly for your safety.

➤ Use cotton clothes to clean the computer cabinet from the outside.

➤ Clear the dust on the SMPS fan and CPU fan, its fan can be jammed due to dust frozen, many computers have a problem of the sudden shutdown, it is also caused by SMPS fan and CPU fan jam...
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Laptops have many advantages, first you can use it anywhere, and secondly, it does not have to keep up with heavy PCs like computers. Therefore laptops are also expensive than a computer and they have good maintenance too. If seen, its battery life with other hardware in laptops also matters a lot. If your laptop does not back up properly, then it is nothing more than an all-in-one computer. If you adopt a few simple tips, you can increase your laptop's battery life and make a good backup too -

Increase Your Laptop Battery Life, Laptop Battery,  Laptop Battery Life

➤ You must always lock the laptop, the charging current laptop will take longer and it will also be hot.

➤ If you use a laptop on a quilt in a bed or winter season, then it can be very harmful. This can cause the laptop to be heated because its ventilation pins stop from putting on the quilt.

➤ Laptop battery is the main part of it, so it is important to take care of it, note that Power Battery is good for the laptop's battery, and always choose Power Plan for yourself, to open the Power Plan, open your Control Panel and select Power Option Go on, you can choose your Convenient Power Plan from here.

➤ Do not allow Battery to be completely discharged anytime, this can damage your Battery quickly.

➤ Take special care of laptop charger, if you have problems with this voltage, then use the stabilizer. Use the Genuine Charger only if the charger is bad. Local Charger also has the possibility of damaging the battery and damaging the laptop.

➤ Keep the laptop's brightness low, this will keep your eyes safe and laptop battery too.

➤ Turn on WiFi and Bluetooth connections only when needed, and turn it off at the end of the day, so there is unnecessary battery cost.

➤ If the battery is too old, change it, otherwise, it may also affect your other hardware.
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Increase the speed of the computer,speed of the computer,computer,speed

Whether you buy a good computer or even the latest operating system, but the speed of the system is still slow and can not understand the reason? So listen, as the new house cannot be cleaned once and cleaned forever, it has to be cleaned every day. In the same way, the computer should be kept clean. There are two types of computer cleaning, the software, and the hardware but how it will be, let's know -

Hardware tips

➤ You know that dust is the worst enemy of the computer, dust accumulates on your chip and IC, so that it does not stay cold and your computer speed decreases.

➤ There is a need to pay special attention to the cleaning of the processor fan, dust also stops it or it slows down the speed too. If the situation is much worse then immediately change the new processor fan.

➤ Keyboard dust gets damaged quickly on the keyboard, or its buttons get jammed.

➤ Your DVD Rom may also be able to access the dust disservice, causing dust to the lens on its lens may worsen or DVD Rom can be jammed.

➤ For this, you should clean it once a month with blower cleaning once a month.

Software tips

➤ If the computer hangs repeatedly, then use disk fragmentation. Defragmentation will organize all the files on your computer.

➤ If you have installed unnecessary applications, which you do not use anytime, then uninstall them.

➤ Before installing a new operating system in the system, be sure that your system meets all the hardware requirements or system requirements of the new operating system. If your hardware does not support new windows or applications, then the speed of your new computer can also be very slow.

➤ If you have not installed drivers for motherboard/hardware then install them as well. Without this, the system does not work on its full speed.

➤ The virus can also be the main reason for reducing the speed of your computer, remember that when you last time your system was scanned with an anti-virus, otherwise, right now. Many viruses are hidden in your computer hard disk, which you do not even know, due to which there are many problems during working on the computer.
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Useful Computer Maintenance Tips and Tricks

Computers have become the need of today, whatever the intuition users are reading this post at the moment, they must be using the computer and using the computer as per their need. But due to the overwork and busyness of the work, we forget to maintain the computer. If you want to keep your computer and device safe for a long time, then you have to take care of some things, for this, it would be great if one day schedule is made in the month -

Hardware maintenance and safety

The main part of the hardware computer is the outer part, for this, it is also necessary to maintain

➤ Keyboard - As you know, the keyboards are used for typewriting, do not keep a glass of water or tea/coffee of any kind or any type of fluid while working, if by mistake it is also If the key falls on the keyboard, then it can be salty. Apart from this, the dust-dirt is bad and the board gets spoiled, the dust gets jammed due to the dust, so keep the brush clean from time to time.

➤ LED - Do not use water to clean the LED or monitor, for this, use the chemicals to clean the equipment, the water can be harmful to it.

➤ DVD Writer - Do not even copy or paste scratch CDs and DVDs in DVD Writer.

➤ CPU - Use blower for cleaning CPU, first shutting down the supply completely, after clearing the lid, clean the blower with air, this will remove all the CPU from the CPU, keep in mind that no strings or cables lose. Got engaged

➤ UPS - Often, some users attach laser printers directly to their UPS and when the light goes, the laser printer is loaded directly on the UPS, so that you can be UPS Kharab, so do not do this.

Printer maintenance and safety

The printer is an output device, but in reality, it is a pen of our imagination, with which ink you can print black or colored on white paper and that too in a few seconds, but did you get this huge amount Thinking about the maintenance of this printer.

Operating system maintenance and safety

The operating system acts as a bridge between users and hardware, due to this you can easily run your computer and do the desired work, at the time of Azad you know the popular operating system, in the name of Windows 7, Its safety and maintenance are also very important -

➤ First, use a good password, so that you cannot tamper with your computer.
So, put a password on your computer.

➤ If you want to get good performance, do not apply the non-essential Software, only use Software for work.

➤ If you use the Internet, put a good Anti-Virus on the laptop so that it can be safe from the Virus. If you do professional work, do not enter Free Anti-Virus, it does not work well.

➤ From time to time, keep updating Windows.

➤ Avoid shutting down the computer directly when you go light, shutdown or use hibernate to save time.