Hmm, you could update your cios, latest d2x is v10 beta 53 alt. Also I noticed you have a minimal softmod. I'd recommend using modmii by xflak to get up to date. First I would check if your games aren't corrupted. Use Wiibackupmanager to check our games. Also check if your video mode for these games is setup right. This is especially important if you use AV cables or Componenet in combination with your tv.