|Tolerance ('within') 10% or +- 10% means 12Volt can range from 12+1.2=13.2V Max & 12-1.2=10.8V Min. I would prefer to stay away from those extremes by a reasonable margin of safety, especially the lower range since you will get additional voltage drop under load. |
Do not update your BIOS. You do not have the correct reason for trying this, it will not solve your problems, AND the risk of failing (creating a useless piece of junk) are too high. You only update a BIOS to solve a problem that is documented by the mfg that this will actually solve. A proper reason might be that a new CPU you purchased is not supported by the BIOS but the newer BIOS version DOES support this and you KNOW this because the BIOS update pages LIST the reason for their creating the update.
You need to TEST your CMOS battery BEFORE anything else! This is the ONLY thing that makes any sense as far as the problem you are having. You can get the battery tested at a local Radio Shack or similar store and if it is bad as I suspect then purchase a new one and have them test it before you leave.
Read your manual, BIOS set up section.
Memory brand, size of each stick (in GB or MB), how many sticks, the speed of each memory stick (like: 533MHz DDR, etc.); The settings that you BIOS reports your memory is running at; Your memory multiplier or CPU/RAM ratio (which ever is there) ; The Frequency you are running your CPU at and the multiplier; Your PCI and PCIe(if there is one) or AGP frequencies; Speed step settings; Vcore Voltage reported in your BIOS; ANY thing else you adjust in your BIOS.
You have to be a little bit crazy to keep you from going insane.