A new trial, after a verdict of conviction, may be granted, on the application of the defendant, for any of the following grounds affecting materially his or her substantial rights: (1) Irregularity in the proceedings of the court, of the prosecuting attorney, or of the witnesses for the state or in any order of the court or abuse of discretion by which the defendant was prevented from having a fair trial; (2) misconduct of the jury, of the prosecuting attorney, or of the witnesses for the state; (3) accident or surprise which ordinary prudence could not have guarded against; (4) the verdict is not sustained by sufficient evidence or is contrary to law; (5) newly discovered evidence material for the defendant which he or she could not with reasonable diligence have discovered and produced at the trial; (6) newly discovered exculpatory DNA or similar forensic testing evidence obtained under the DNA Testing Act; or (7) error of law occurring at the trial.