usb接口不顯示問(wèn)題

1、usb接口不顯示問(wèn)題set cmos parameters has not been used for usb peripherals friends, even if properly in stalled the driver system is always a possibility, unable to detect a usb hard drive, this is mainly due to the motherboard cmos port is closed by default, if you don，t set it to open, so natural can'

2、;t detect windows mobile hard disk. in order to solve this problem, we can restart, enter the cmos settings window, and in the heart of the "pnp/pci configuration" section the assign irq for usb" a set to ，enablez，, this system can give the usb port addresses the allocation of the ava

3、ilable interrupt second, the insufficient power supply because the usb hard drive at work also needs to consume a certain power, if directly through the usb interface to electricity, is likely to see as a result, almost all the mobile hard disk comes with a separate external power supply or keyboard

4、, by taking electricity ps2 interface, then just connect the power converter in advance, or through the ps2 good connections with the keyboard, make sure to try again after enough electricity mobile hard disk, then should be able to n ormal use need special remind every one's atte ntion, it is r

5、ecommended to use mobile hard disk before make sure have enough power, otherwise it may be hard disk damage due to insufficient power supply. the usb extension cord fails for both reasons and may not be able to use the usb port type such as computer configuration is 1. 1 standard usb interface, and

6、buy mobile hard disk is usb 2.0 standard interface, this requires connecting computers and mobile hard disk cable must support usb 2. 0 standard for high-speed mobile device into a low-speed hub, the device may not be the normal installation, and some friends in the use of mobile hard disk at the sa

7、me time also use usb flash drive, in order to facilitate the use of usb flash drive directly attached to the usb 1. 1 standard cable, thus led to a mobile hard disk unable to properly identify usb2. 0 standards this can be resolved simply by changing the connection line to the usb 2.0 standard. four

8、, the windows version is too low for some still use windows 95 or windows 97 system of friends, even if the computer is equipped with usb interface, but because of the windows 98 operating system does not support usb peripherals, before therefore no matter how to install driver, set cmos parameters

9、can make normal use of mobile hard disk for this case, one solution is to upgrade to the windows operating system, above 98, another way is to microsoft，s official site to download the corresponding patch make windows 95/97 can identify mobile hard disk five, the system settings for some of the wind

10、ows 98 users, after installed driver, can see the mobi 1 e hard disk from the device manager icon, but in the resource manager has no corresponding drive logo, this is improper system settings double-click on the mobile hard disk in the device manager icon, and click on the "properties" bu

11、tton, the pop-up window can see off at this time, can erase, synchronization, data transmission and int 13 unit four options, of which "can delete" a system default is not in front of the box, as long as you check this option to restart the computer after, can be seen in the resource manag

12、er of new mobile hard disk drive in a word, mobile hard disk can，t identify the cause of the problem is more, but generally not usb interface or the fault of mobile hard disk itself, so need everyone in exclusion from the surrounding more associated parts, believe you also can we11 use mobile hard d

13、iskthere are four possibilities: 1. the system，s bios is changed, and the usb excuse is changed to disable the main thing is to prevent the u plate virus it's hard to reset, and a lot of them are password-2 the usb cable is cut off directly, and you can see it when you open the case virus causes

14、 maybe your usb cable is bad try a u-driveif it's a usb stick, try a usb stick,if the line description is a u disk problem2, step on the u disk, no problem, then the operating system problems, may be a virus may also be a driver problem, you can reset the system (ghost) soon, if can use, that is

15、 a software problem,3, if above can，t be sure it is a hardware problem, hardware problems may have two, one is the line problem, a plate of a machine with multiple usb interface, try other interface line not line, such as desktop computers in addition to the front usb port and placed in a usb port,

16、after actually motherboard and some free usb interface can be answered4, if not all usb interface, can be sure is the motherboard usb service 10 out, first to see if the bios settings to open the corresponding 10, if were opened, and illustrate the mainboard related services hardware damaged, if do

17、not want to repair only- plus usb extension, desktop and laptop have some selling $20 to 60 yuan!modify the registry to start 一 program 一 run, enter regeditenter the registryfind the registry item hkey_local_machine system currentcontrolset services usbstor, and change the "start" value on

18、 the right to 1 (for hexadecimal), determine and restart it to take effectthis allows you to use the usb port1: the power supply is not enough, the two connector plug in. 2: did not assign drive right click on the desktop of my computer 一 management, storage, disk management inside assign your mobi

19、1 e hard disk drive the other pay ever seen data: under normal circumstances, mobile hard disk connects the host system can recognize it into ''mobile storage devices, and automatically added in the" my computer，zdrive if the system will move hard disk into the usb device "unknown&

20、quot;, so will not be able to use mobile hard disk, when this happens, you might as well in the following order to find the reason one, the setup problem that relates to the system 1. don，t think that as long as the motherboard has a usb port, you can use the mobile hard drive and see if the system

21、supports it. windows 2000 and windows xp and above version of the system can be directly support mobile hard disk, do not need to install the driver can use, and under the windows 98 using mobile hard disk with must install driver, otherwise the system will be mobile hard disk identified as "un

22、known" usb devices 2. for some windows 98 users, after installed mobile hard disk driver, can see from the "device managerz，icon to the mobile hard disk, but in the "explorer" without corresponding drive logo, this is improper system settings double-click on the mobile hard disk

23、in "device manager，z icon, and click "properties" button in the pop-up window, can see at this time "disconnect，z, "delete", ''synchronous data transmission77 and int 13 units" four options, including "can delete" a system is off by default and ch

24、eck this option to restart the computer after, you can see in the "explorer" new mobile hard disk drive the problem of the usb port of the motherboard is solved by the problem of the usb port of the motherboard, which causes the mobi 1 e hard disk to not be used properly. 1. usb port is no

25、t open: on some old machines (including some name-brand computer) although there are external usb interface, but in the bios is off by default, so even if the system support, so should check the bios settings in usb interface options are open: hold on start del key, enter the bios settings, the &quo

26、t;chipset the features setup" or ''integrated peripherals" will 0n chip usb" set to "enabled", save and restart the computer. usb ports are not supported by the system: this is also the case with older computers as the author of this compatibles, motherboard is the f

27、lagship vista710v2, motherboard chipset used via apollo mvp3, an external usb interface card after system didn，t recognize (with the windows me and windows 2000 double system),there is no ''universal serial bus controller" in "device manager online check, the original is the mainbo

28、ard chipset has a problem, to download the latest motherboard bios refresh, download again via usb driver patch for this chipset, finally on my computer to recognize the ''mobile storage devices. 3. usb port power supply shortage, the vast majority of the normal work of the mobile hard disk

29、for 5 v voltage, 0. 5 a current can be directly through the usb interface of the motherboard supply, but some motherboard usb interface power supply less than the value, leading to a mobi1e hard disk cannot be system identification. luckily, there is a ps / 2 connector on the special usb connector f

30、or the portable hard drive box, as long as the connector is plugged into the ps/2 interface of the motherboard three, improper operation in mobile hard disk cannot be used caused by improper operation and mobile hard disk cannot be used properly, is mainly refers to the timing of the plug mobile har

31、d disk without mastering it's best to close down the running applications before plugging in the hard drive, and don，t plug in the system boot process 2. will there be a mobile hard disk just connected to systems to recognize dish, the process of loading, before the end of this process is best n

32、ot to make any operation (offered to mobile hard disk points less area, points in the area, the more system to recognize the longer plate), will have to wait until the mobile hard disk work light is stabilized before operation. 3. the use of mobile hard disk to use, also can appear before again and

33、again, it can，t use occasionally, when this happens to the "systent in the "unknown" usb devices to delete, and then remove the mobile hard disk, and then restart the system, then connected, mobile hard disk failure in general can solve the four, mobile hard disk itself if ruled out t

34、he cause of the problem above, still can't use mobile hard disk, it may we 11 be mobile hard disk itself has a problem mobile hard disk structure is simple, mainly composed of hard disk box and notebook computer hard disk, hard disk box generally not easy bad, caused problems mostly notebook com

35、puter's hard drive in order to avoid the mobile hard disk hardware itself is damaged, in use should be paid attention to the following aspects: 1. the mobile hard disk smooth when use, should be put in place, do not move when it is to read and write the vibrations 2. should strictly in accordanc

36、e with the procedures when remove the mobile hard disk operation: don，t read such as hard disk plate, double-click the task bar "pull out or pop-up hardware icon in the lower-right corner of the window, in the event of a window in the "stop" first use of the device, and then removed from the system equipment options, and then remove the mobile hard disk from the host (remember not unplu