I think its a problem with either the mobo itself or just needs a battery replacement on it.
A while ago I got a bad checksum error and when I looked into that it was either bad bios settings or a bad battery from what I understand. I dont think its the settings cuz i have used the same bios settings for a very long time and never had a problem. I just turned off the computer when I got the error and never got it again (its been a month or so) but the computer since then has had problems booting. During the post sometimes it will freeze and stop detecting everything keyboard, mouse, gpu even ports and power buttons. Then i flip the switch on the psu and restart and either it will get stuck in the post or it will boot onto windows and even sometimes when its on windows it will stop working and stop detecting everything. This only happens during start up after its been booted it runs with absolutely no problems or performance drops, although the computer does only successfully start up 1/4 maybe 5 times. What does this sound like to you guys?

Edit - I should add that my mobo is a msi 760gma-p34(fx)