I found this online....hope it helps...
How do I get computer to recognize printer?
You have a problem. Your computer does not recognize the printer. Moreover, you cannot reinstall the printer driver or software because you have misplaced the CD. Well, don't worry. The steps given below will help you out.
STEP 1: Checking the Cable and Power Supply
The simplest step comes first. Just check whether the printer cable is connected to the computer securely. Moreover, also check whether the printer power cord has been plugged in properly.
STEP 2: Uninstall Old Printer Software, If any
If you have had an older printer, then make sure that printer drivers and software
are uninstalled from the computer. If you don't, the computer might not recognize the new printer. This problem is common in inkjet printers.
STEP 3: The Paper Size
A simple matter like the incorrect selection of paper might also lead to this problem. If the printer paper size does not match the size set in the printer settings, than the computer might not recognize the printer.
STEP 4: Restart
There are times when all it requires is to restart the computer. This is in case where you have connected the printer after loading the driver. If this is the case, then just restart your computer.
STEP 5: No Pass through Device
This is actually an extension of your first step. Make sure that the printer cable
has a direct connection to the computer. No pass through devices must be used for this purpose.
This Article is written by John C Arkin.