I changed the memory frequency in my bios and updated my bios. My computer turned off after and restarted. When it restarted the pc turns on and all the hardware inside is working but nothing shows up on my monitor and my keyboard and mouse aren’t turning on. I tried resetting the cmos by taking out the battery and putting it back in with the power cable and all other cables disconnected, but it isn’t working. I don’t know what to do since I’m not that educated with hardware.