So yes, I should not have gone into the BIOS in the first place but curiosity got the best of me. I have a ASUS P67 motherboard. I found something called "OC Tuner" in the BIOS (in the Advanced settings, I must confess), clicking on it gave two options; "OK" and "Cancel". I clicked on OK, computer shut down, it started up twice, shut down twice, started up the third time however now instead of 8 gigs of RAM it is only showing 4 Gigs. Can anyone tell me what happened and how to salvage this situation?
Edit: Made a correction.
Edit: Made a correction.