After upgrading to Windows 7, I could not open HP Toolbox and getting an error message when I try to use it. It is getting me frustrated as I am able to use my printer efficiently without any problem. I use my toolbox in order to keep note of the ink cartridge. I tried to consult about this with the supplier but he said they can't do anything as I am on Windows 7. What should I do now? Does that means the HP Laserjet 2550n printer does not support Windows 7?
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