Why can t you use the IBM laptop mouse 30

The third floor makes sense, maybe the drive is not right. Friend, the old machine, don't be too nostalgic, let's get a new one. This saves it from tossing!

It must be a business person, and the T400 can be used for several years. It's definitely not used to it at first, but it will be fine with more time.

Check if the BIOS has the PS 2 mouse turned off.

The next trackpoint driver will do.

Let's see if a reboot works. Or reinstall the driver.

This problem is generally a driver problem.

What happens when you're online**? Is it a mistake: "678" or something else?

If it is a connection error: 678 means that the line is not connected1, first confirm that the adsl modem dial-up is normal, because the IP automatically obtained by the network card is not cleared, so the network card cannot be obtained when dialing again.

After 5 seconds, right-click on the local connection to select Enable, and then turn on ADSL modem dial-up.

2. If the first step is invalid, then with ADSL modem turned off, still disable the local connection (network card), restart the computer, and then start.

Use a local connection (network card) and then turn on ADSL modem to solve the problem;

3. If the above steps cannot be solved, check whether the NIC light is on, if the NIC light is not on, refer to the dispatch knowledge base: "The NIC light is not lit or.

often does not light up".

4. If the NIC light is normal 1 or 2 steps can not be solved, lead the user to uninstall the NIC driver and reinstall the NIC driver.

Identification number: 9973, how to set up ADSL dial-up connection under winxp method leads the user to create a dial-up connection, if 98 system recommends that the user be safe.

Install raspppoe software or ehernet300 software to connect.

5. If the above operation is invalid, contact the telecommunications department to confirm the port.

Failure of the modem is the main cause.

7.If multiple computers are using routers to access the Internet, you can try removing the router and connecting to InterNT. If you can access the Internet smoothly, it means that the router is faulty, and you should troubleshoot the router or replace it with a new one.

The solution to the mouse malfunction.

I've had more than one occasion with the problem of the mouse flying around automatically, and I'm sure other friends have also encountered it. Although this is a small problem, it may cause you a lot of trouble, and here I will solve this problem by combining theoretical and practical analysis.

First, let's talk about software glitches. When it comes to this, everyone immediately thinks that the system is infected with a virus, or that the mouse drive is in conflict with the operating system. But there is another reason, which may not have been encountered by everyone, that is, you have fallen for the Trojan horse, and the system is remotely controlled for others.

clean software to detect and kill Trojans.

The next thing we can talk about is the failure of the hardware. First of all, we should be familiar with the working principle of the mechanical mouse: by moving the mouse, the rubber ball is driven, and the rubber ball rolls and rubs the horizontal and vertical wheel rollers in the mouse to drive the grid wheel to rotate.

The rim of the grille wheel is grille-shaped. Immediately on both sides of the grille wheel grille, one side is an infrared light-emitting tube, and the other side is an infrared receiving assembly. The infrared receiving assembly is a three-terminal device, which comprises two infrared receiving tubes A and B.

There is a hold-down wheel in the opposite direction between the horizontal and vertical wheel angles, which keeps the ball pressed against the two wheel shafts no matter which direction it rolls.

Pass. ps/2

The port or serial port is connected to the host. The interface uses four wires, which are power, ground, clock, and data. When working normally, the movement of the mouse translates into the rotation of the horizontal and vertical grid wheels in different directions and speeds.

When the grid wheel rotates, the teeth of the grid wheel periodically block the infrared rays emitted by the infrared light-emitting tube to irradiate the A and B tubes in the receiving assembly, so that the output terminals of A and B output electrical pulses to the control chip in the mouse. Due to the vertical arrangement of the two tubes A and B in the infrared receiving assembly, the moving direction of the part between the infrared emission and reception of the grid wheel teeth is the up and down direction, and the angle between the receiver and the infrared transmitter is not zero, so the electrical pulse output by the A and B tubes has a phase difference. The control chip in the mouse determines the rotation direction of the horizontal or vertical grid wheel through the phase difference of this pulse, judges the rotation speed of the grid wheel through the frequency of this pulse, and continuously transmits the mouse movement information to the host through the data line, and the host makes the cursor on the screen move synchronously with the mouse through processing.

When the computer starts, Windows initializes the mouse through the interface. If a good regression cable in the mouse cable is broken, the host will give you the message that the mouse is not installed, please shut down and install the mouse. If the mouse connector is unplugged in use or the mouse cable is in poor contact, the mouse system is paralyzed.