I have a dell Inspiron desktop recently my keyboard n mouse stop working and the screen was distorted and I turn it off and on and when to normal then 10 minutes later it happen again. I turn it off again and once I turn it back on the fans started to go off really fast and started beeping 5 short beeps and saying CMOS checksum error and keyboard failure I been trying to make it work Idk what else to do what you guys think it can be I already try resetting the CMOS battery and pluging a new keyboard nothing work. Let me know thanks