My 2407WFP unable go into power save mode, even while the computer is shut down. While the computer is on sleep mode, is powered off, or while the cable is unplugged, the monitor will full screen flash Red, Green, Blue, Black, White, after that go to sleep mode for about some seconds. It afterward replicates this progression in its place of just going to sleep or standby. Dissimilar computers, dissimilar cables, no modification is it possible it is in a few sort of self test mode?
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