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I installed Windows Password Recovery on windows 8.1, whenever I try to launch a GPU attack, the prgram crashes and I get a message indicating that Windows Password Recovery has stopped working, stating that "A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available."
I'm using HP laptop (ProBook g1 450) with a graphics card AMD Radeon HD 8750M. 8 GB memory i7 4th generation processor.