A recent hardware or software change might be installed a file that is signed incorrectly or damaged, or maybe it's a malicious software from an unknown source. "
Ngwaọrụ ngwanrọ ma ọ bụ ngwanrọ ọhụrụ nwere ike itinyela faịlụ nke edere na-ezighi ezi ma ọ bụ mebiri emebi, ma ọ bụ nke ahụ nwere ike bụrụ software ọjọọ site na amaghi ama.