When I turn on my Epson NX400 printer/scanner my computer does not recognize my USB ports and I cannot use any of them. When I turn off my printer/scanner, I can use all of my USB ports. My wireless internet gets turned off when I turn on my printer/scanner (and it is still turned off when I turn the printer off). When I have the printer turned off and restart my computer, the internet turns back on.I have called AT&T and Epson and they both say it is not a problem with their products. The Epson tech said it may be a Microsoft problem and may need a patch for this. I have automatic Microsoft XP updates turned on. I have gone to the update site. I cannot find any update that fixes this problem.Thank you in advance

Hi R0SEBUD,Did you make any software or hardware changes on your machine prior to this issue?Let’s follow these methods & check if it helps.Method 1You may connect the Epson NX400 printer/scanner to some other computer & check if the issue persists.Method 2You may contact your computer manufacturer to update the chipset drivers. Thereafter, check if the issue persists.Note: Modifying BIOS/ chipset incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of BIOS/chipset can be solved. Modifications of the settings are at your own risk.Hope the information helps. Please post back and let us know.RegardsDebleena SMicrosoft Answers Support EngineerVisit our Microsoft Answers Feedback Forum and let us know what you think.