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My HP6155e prints and scans fine, but will only print if started prior to booting PC. If I start PC first, I am able to scan, to see ink status and whether low or paper, but not print. The 'HP Smart" app shows the printer as ready, but when printing, nothing happens and no error messages. If i reboot PC at that point, printing works fine. I can live with this, but would like to eliminate the need to reboot PC whenever I need to print, as I have the printer on a different floor in the house and it is usually turned off. Thanks for all tips.  

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