I would have thought a hardware or driver problem also, but do you think it might be time to give the mysterious healing powers of Dial-a-Fix a try or might that make things worse if it is indeed a hardware problem?
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New iPad, iPhone SE & Red iPhone 7 on sale now
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.