yangyang
Joined: 11 Apr 2011
Posts: 209
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1. BIOS settings due to improper port invalid set port is invalid due to improper settings port is invalid due to improper settings due to improper port invalid when you meet the above symptoms, you should first check whether the printer is connected to the corresponding port on your computer well, if good physical connection between them, then the most of the fault in the computer corresponding to print port is invalid due. At this point, you can be a computer system to restart, and then open the system BIOS parameter setting interface, check the print port settings option is correct. For example, if you want to add to the system printer parallel port, it should find the "Onboard Parallel Port" in the BIOS settings page setup options, and then see whether its value has been set to "Enabled" was set "Disable" system certainly will prompt you not be able to add the printer's; if you want to add to the system printer is a USB port, then, then you want to check what USB port of your computer's motherboard whether it has been enabled the, check the USB port is valid, you can find the "PNP and PCI Setup" item in the BIOS setup screen, or to find the "PNP / PCI Configuration" item, and then look at the the corresponding project under the "USB Function" or "Assign IRQ For USB" parameter whether it is set to "Disable", if that is the case, you must modify this value to "Enable" to make effective computer USB port.
Tip: add a USB printer interface, computer several USB interface connected to an external device, it is prone to the phenomenon can not add a printer as a USB external devices must meet certain Power in order to work properly, too many USB external devices connected to the computer at the same time, it is easy to lead to the USB port of the printer can not be large enough computer power supply power, then naturally can not add a printer. Order to effectively avoid this phenomenon, you have chosen to support an independent power supply for USB printers, or other USB devices connected to the computer will temporarily pull out to ensure that the printer is able to obtain the required power supply power.
There is little need to remind you, if the USB interface standard USB interface with the printer in the computer's motherboard is different, but also very prone to the phenomenon can not add a printer; in order to avoid this phenomenon, you can do that only on computer motherboard upgrade or install the USB interface printer to a new computer.
2. System file corruption program error
If by the above method does not resolve can not add a printer failure, it is likely to be related system and add the printer program some system files accidentally damaged or lost, the error occurred when add printer program run. In order to verify that the Windows system files are damaged, you can use the following methods to try to repair the damaged system files: Click the "Start" / "Run" command in the the System Run dialog box that appears, enter the command string " sfc / scannow ", click" OK "button, Windows system will automatically file computer system a full scan encountered damaged system files, the system will automatically prompt you to insert the installation CD, and then on the damaged file repair. Wait until after the repair operation is complete, you may wish to restart the computer system, and then try to add the printer to see.
Tip: If the computer connected to the printer often with the network connection, you may wish to first antivirus program online upgrade to the latest version, then the system comprehensively, completely killing the virus to see whether the virus at play!
3. Print settings prohibit improper installation
If the user in order to prevent others in your own computer at random to install printer prior has the printer attribute parameter conduct appropriate setting, the average user does not add a printer permissions, then you in the future again, double-click the Add printer icon, certainly appear unable to add The printer's fault tips. In order to check whether the local computer has banned the Add Printer permissions, you can operate in accordance with the following steps: First, click the "Start" menu in the "run" command in the Run dialog box that appears, enter the command string " Regedit ", click the Run box" OK "button, open the Registry Editor interface;
Secondly, in the Registry Editor interface, one by one to expand the registry subkey HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Policies \ Explorer, in the "Explorer" sub-key corresponding to the right-hand window area, check whether there is a named DWORD value "NoAddPrinter" (as shown in Figure 1), if found that the presence of the key, and then double-click the "NoAddPrinter" key, the values ??set in the subsequent dialog box to see whether its value "1", and if it is to prove the local computer does prohibit the Add Printer permissions, you can modify its value to "0", then click the "OK" button, and finally click the "F5" function key to refresh what registry settings, so that the local computer to add printer permissions in effect again.
4. System setting improper permissions is not enough
If you are in the Windows 2003 server system, double-click "Add Printer" icon in the Printer List window, there can not add a printer failure, the most appropriate setting, which is not on the system, the user can not get enough privileges to add a printer. To Windows 2003 server system will work in the default state in totally safe mode, this mode is limited to ordinary users are free to install a new program to the system. In order to test the Windows 2003 server system is working in a totally safe mode, you can follow these steps to operate:
First, click the "Start" / "Settings" / "Control Panel" command in the pop-up control panel window, double-click the "Administrative Tools" icon, and in the subsequent management tool list window, double-click Terminal Services Configuration " project, open the "Terminal Server Configuration interface.
"Server Settings" item, then select the left side of the interface and the corresponding server settings "area on the right, you will be able to see whether the permissions compatibility is set to" totally safe mode "or" loose Safe Mode "is set to" completely safe mode ", it can not add a printer failure is caused due to insufficient privileges; you must double-click the permissions compatibility" project, in the subsequent pop-up project settings window set permissions compatibility into a "relaxed and safe mode", the only way ordinary users have the right to a Windows 2003 server system to add a new printer.
5. System service stops lead to add error
In addition to the above reasons will cause to add a printer error, printer system services careless stops unexpectedly, also may lead to such failure. Generally, the printer system services is the "Print Spooler" service, if this service is stopped, it could lead to you can not successfully add the printer to the computer system. Check the "Print Spooler" service is stopped, you can operate in accordance with the following steps: Click the "Start" / "Run" command in the pop-up system in the run dialog box, enter the string command "services.msc" Click the "OK" button to open the system service list interface;
Select "Print Spooler" service in the interface and right-click the Properties command from the shortcut menu, open the service properties settings window (see Figure 3), from the window, you you can clearly see the current operating status of the "Print Spooler" service. If it is found that the service has been banned or disabled, you can attribute set in the service interface, its startup type is set to "Automatic", click "start" button, the last and then restart the computer system to look at , maybe later will be able to successfully add the printer again. In addition, if the system's plug-and-play service is stopped, it is likely to cause all kinds of strange print failure, so when you find that the system is unable to correct the Add Printer may wish to check the way the system's plug-and-play service is normal
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