U disk is an important way for many friends to carry around for work and exchange data. If the computer does not respond at all or cannot read data after inserting the U disk, then it is really worrying. Have you encountered this situation? How can I get it back to normal? Let's try these tricks with Xiaobian.
Is the USB interface normal?
Some USB flash drives will have no response when inserted into the computer. This is because there is a problem with the working status of the USB interface. At this time, right-click the Win icon (bottom left corner) and select Device Manager, find "Universal Serial Bus Controller", and click Open the drop-down list.
Find the USB controller, which is usually a USB Composite Device or USB mass storage device, right-click the pop-up menu, and select Uninstall Device. Then unplug the U disk from the USB interface and plug it in again, the system will reinstall the driver, which usually solves the problem.
The old computer did not open the USB
The USB flash drive inserted into the computer has no response, or the motherboard USB controller is not working at all! Some old computers have a USB switch option in the BIOS. In this case, press the prompt button (F2 or Del) to enter the BIOS Setup (sometimes abbreviated as Setup), find the Advanced item (usually under this item), and find USB related settings, modify it to Enable, and then save and exit (in the save and exit item) and restart.
Pay attention to power supply problems!
There is another type of situation, that is, it prompts an error after inserting it, or even re-identification constantly, it just can't be used. This is mostly caused by insufficient power supply of the USB interface-and mainly concentrated on the USB interface on the front panel and the interface connected to the USB-Hub. At this time, it is best to choose the USB interface on the back of the case, or instead of USB-Hub, try to plug the U disk directly into the computer, and there will be no problem in most cases. If it’s a laptop whose USB interface is not enough, there is really no way...
If this still does not solve the problem, friends can refer to our previous push "Resurrecting the U disk to repair me, too" and "Don't throw it away! "Firmware Repair Rejuvenates the Flash Disk", try to rescue it with professional tools, but the data in the U disk is difficult to recover.
The so-called portable projector, also known as pocket projector, mainly through the 3M LCOS RGB three-color projector and decoding technology, the traditional huge projector is compact and portable, making the projection technology closer to life and entertainment.
Advantages compared with traditional projectors:
1. Small size, light weight, easy to carry.
2. Low calorific value and low noise.
3. The price is relatively cheap.
4. Most models support wireless connection through software projection.
Applicable fields:
1. Replace some functions of TV: some machines can have built-in CMMB function, or can be directly connected to the set-top box to put TV, which can be used as a 21-inch TV during the day and a 60-100-inch TV at night (Note: Because of lumen and resolution issues, lumens during the day If the degree is not enough, it must be projected at a close distance) to achieve the effect of home theater; it is convenient to move and break through the traditional film and television space. Even if you are on the mountain, you can also share today's TV series, movies, and MTV with your lover.
2. Business trip: Portable projectors are easy to carry because of their small size and light weight. When you need to display computer content or mobile phone content, you only need to connect the portable projector to achieve the demonstration effect.
3. Private space: For dormitory beds or small private spaces, in the absence of a computer, you can use a portable projector to project the content of your mobile phone to watch video pictures, etc., without staring at the mobile phone at close range.
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