I am facing a weird problem with my HP scanjet 5490 which is connected to my computer. I have a desktop computer which is installed with Windows 7 operating system. I recently bought a HP Scanjet 5490 scanner and connected it to the computer. But the HP Scanjet 5490 is not recognized by computer. Whenever the scanner is connected, it gives the error saying unknown device connected. I dont know how to solve the problem and hence need your help in solving the issue.
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