Troubleshooting A Pointing Device 847

1. Download the current mouse driver for Windows 95.
2. Edit the Windows 95 registry by clicking on the Start menu and selecting Run.
3 . Type “C:.EXE” on the Open line.
4. Click OK. The Registry Editor program will start.
5.
Doubleclick on the HKEY_LOCAL_MACHINE folder.
6.
Doubleclick on the Software folder.
7.
Doubleclick on the manufacturer’s folder (i.e., Logitech).
8.
Doubleclick on the manufacturer’s driver folder (i.e., MouseWare).
9.
Doubleclick on the CurrentVersion folder.
10. Click on the Global folder.
11. Lets assume the mouse is on COM and the modem is on COM. On the right side of the screen will be a list of value data strings. Doubleclick on the PortSearchOrde
string. An Edit string dialogue box will appear. The Value data line will read COM, COM 12. Remove the space, the comma, and COM so the line reads COM 13. If you only plan to use one mouse on the system, change the Maximum Devices
value data line to “1” using the same steps. This will tell the driver to stop searching for additional mice after the primary mouse has been found.
14 . Click OK, and the values under the data value section on the right side of the screen should change. Exit the registry editor (saving is automatic. Shutdown the computer and reboot from a cold start so that your changes can take effect. If you are not using a serial mouse, remove Serial from the “SearchOrder” value data line so that no serial devices are searched for at all. In general, remove any reference to the port that the modem is using. Symptom 25-15. A two-button First Mouse refuses to work on a Packard Bell system The pointer doesn’t move, but Windows 95 did not report any Problem detecting the mouse. This is a known problem with some Packard Bell computers and the two-button First Mouse serial version (MN M. It might be possible to workaround the problem by pressing + to open the Start menu. Using the arrow keys, highlight
Settings, then Control panel, and press the key. Select the Mouse icon with the arrow keys, and press the key. This will open the Mouse properties dialog box. Tab over to the Quick setup tab. Then, (using the right arrow key) open the Devices tab. Once on the Devices tab, Tab over to the Add mouse button and press the key. The mouse-control software should now detect the two-button serial mouse, and the pointer should now move properly. Unfortunately, you’ll need to perform this procedure each time you restart the system. Otherwise, you should try disabling the builtin serial port and install a different serial card. You might also exchange the serial version fora PS version, if your system has a dedicated PS style mouse port (be sure to uninstall the mouse software if you plan to exchange the mouse. Go to the Windows 95 Control panel and launch the Add/remove
programs icon. Select the mouse product (i.e., “Logitech MouseWare”) and click on the
Add/remove button. When the message Uninstall Completed appears, reboot the system.

Symptom 25-16. A Logitech three-button mouse refuses to work on a Packard Bell computer You install a Logitech three-button mouse on a Packard Bell computer, and when you open the Enhanced mouse control center on the Devices tab, it states Pointing device on unknown port It also shows only a two-button mouse. In virtually all cases, you’ll need to tweak the Registry
1. Click on the Start menu and select Run.
2. Type “C:.EXE” on the Open line.
3. Click OK. The Registry editor program will start.
4. Open the Hkey_Local_Machinennnn> folder (where is an incremental fourdigit number starting at 0000).
5. Click on each folder under the Mouse folder and delete them until no X folders remain.
6. Exit the Registry (saving is automatic) and reboot the system from a cold start.
7. Open the Enhanced mouse control center to verify the correct detection of the pointing device. Symptom 25-17. The mouse pointer moves only vertically The mouse is connected to a PS port under Windows 95. If the mouse works along one axis but not the other, it’s usually because of a hardware problem—either the mouse needs to be cleaned or repaired. However, in some cases a software-configuration problem can occur when the mouse driver (i e, Mouse Power v) is installed on a system with Plug-and-Play BIOS running Windows 95, and the mouse is connected to the PS/2-style mouse port. As soon as you touch the mouse, the pointer darts over the right edge of the screen, and then will move only up and down.
1. To regain control over your computer, reboot in Safe mode.
2. Click Start, then Run, then type “REGEDIT” and press .
3. Open the HKEY_LOCAL_MACHINE folder and see if BIOS is listed under
Enum. If it is, then you know the software configuration is causing the problem.
4. Open HKEY_LOCAL_MACHINEPNP0F13, and look fora key (usually “05” or
“07”) under “*PNP0F13.” Click on this key to highlight it. The key under
“*PNP0F13” should now be highlighted, and the corresponding values should be displayed on the right side of the window. Notice that string values have an ab icon next to them and binary values have a “011” icon next to them.
5. Compare your values to those shown. Edit your entries until all your values shown on the screen match these values
6. Open HKEY_LOCAL_MACHINE. There should be multiple keys under Mouse such as “0000” and “0001”). All but one are to be deleted. Carefully determine which one pertains to your current mouse (by looking at the values associated with each key, and delete all keys under Mouse, except the related one.
7. Be sure that the one remaining key under Mouse is labelled “0000” (rename it, if necessary.
8. Click on the X box in the far upper-right corner of the Registry editor to close it.
9. Reboot the computer from a cold start. The computer should reboot in normal mode, and the problem with the mouse and keyboard should begone.

TABLE 25-1 PINOUT OF A SERIAL MOUSE PORT (LOGITECH)

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