Error: Unidrv.dll is already in use (due to Windows 3.1 driver not updated).
Error:
Unidrv.dll is already in use
Cause:
The Windows 3.1 driver for the HP DeskJet printer was not successfully upgraded to the version which is compatible with Windows 95.
Solution:
Click the 'Start' button, select 'Settings', and select 'Printers'. Right-click the printer icon and select 'Delete'. Click 'Yes' twice. Double-click the 'Add Printer' icon and follow the instructions to reinstall the appropriate driver.
1) Click the 'Start' button to display the 'Start' menu.
2) Select 'Settings' and select 'Printers'. (The 'Printers' window appears.)
'Printers' menu item
3) Right-click the HP DeskJet printer icon and select 'Delete'. (The 'Printers' dialog box appears.)
4) Click 'Yes' to delete the printer.
5) Click the 'Start' button to display the 'Start' menu.
6) Select 'Settings' and select 'Printers'. (The 'Printers' window appears.)
7) Double-click the 'Add Printer' icon. (The 'Add Printer Wizard' dialog box appears.)
The 'Add Printer' icon
8) Click 'Next'.
9) Do one of the following to select the appropriate printer:
a) To install a local printer:
1] Select the 'Local Printer' radio button if the printer is attached directly to the computer.
2] Click 'Next'.
b) To install a network printer:
1] Select the 'Network Printer' radio button if the printer is attached to another computer or to a network.
2] Click 'Next'.
3] Type the network path or queue name in the 'Network path or queue name' box.
NOTE: The path must include the network drive letter.
4] To print from MS-DOS based programs, select the 'Yes' radio button.
The 'Add Printer Wizard' dialog box
5] Click 'Next'.
10) Do one of the following:
a) Select from the list of available printers:
1] In the 'Manufacturers' list box, select 'HP'.
2] In the 'Printers' list box, select the appropriate HP DeskJet printer model.
b) Use the manufacturer's disk:
1] Click 'Have Disk...'. (The 'Install From Disk' dialog box appears.)
The 'Have Disk...' button
2] Type the path to the disk in the 'Copy manufacturer's files from' drop-down list box.
3] Click 'OK'.
4] If prompted, select the appropriate HP DeskJet printer from the 'Printers' list box.
11) Click 'Next.'
12) If prompted, select the 'Replace existing driver' radio button.
13) Click 'Next'.
14) If prompted, select the appropriate port from the 'Available ports' list box.
The 'Available ports' list box
15) (Optional) Type a name for the printer in the 'Printer name' box.
The 'Printer name' box
16) (Optional) To set the printer as the default printer for Windows 95, select the 'Yes' radio button.
17) Click 'Next'.
18) If you do not want to print a test page, select the 'No' radio button.
19) Click 'Finish'.
20) If prompted, insert the appropriate Windows 95 diskette or CD-ROM and click 'OK'.
21) Select the 'File' menu and select 'Close' to exit the 'Printers' window.
