Hi, Having a problem with the V7 monitor I recently ordered. It stays on for about a half a day then it go off with the "no signal" sign. Tried plugging it in to three different outlets in my office room but still get the "no signal". Very difficult to get it back on. Have to shut the computer off and pull the plug off and on. Could there be a defect in the monitor? I'm very pleased with the V7 while it's working properly. Please advise. Thank you, Bob Daniels bertojoto1@gmail.com