If you have problems with boinc GPU, there may be two distinct problems: 1) BOINC does not recognize your GPU (coprocessor) at all, or 2) the project (Amicable) ran out of GPU work units. Please restart your boinc client (or computer) and then look into Event log of boinc manager, it is under Tools in Advanced view. Near the start there should be lines talking about GPUs. If there are, then it is not 1. Number 2 is actually common too. You can keep Amicable connected together with gpugrid and see if you get tasks from time to time. Some projects are picky and will send you work only if you have GPU with certain capabilities.