![]() It sends instructions to your graphics processor telling it what image needs to be created an input. Your hard disk retrieves the software program data and sends it back to your CPU that’s an output.Your CPU sends an instruction to your hard disk to retrieve the software program from storage that’s an input.Let’s say, for example, that you’re opening up a software program: BIOS is something that’s integrated into the computer while it’s being manufactured.īIOS stands for “Basic Input/Output System.” What exactly does it do? Basically, it manages the essential functions of your computer.Īll computers function through a process of inputs and outputs. Operating systems can be installed, uninstalled, and updated long after you’ve bought the computer. To understand the importance of a CMOS battery, you first need to understand what your computer BIOS is.Įvery computer has BIOS pre-programmed into its hardware. While the main laptop battery powers all of the components from the CPU to the hard drive and tends to be one of the largest and heaviest parts of your laptop, a CMOS battery powers just the BIOS, and is usually coin-sized and lives on the motherboard. Wait, my laptop has more than one battery? In short, yes. ![]() How do I replace the dead CMOS battery with a new one?.How do I diagnose a CMOS battery failure?.By washing i mean get a toothbrush and some IPA and gently massage the pcb to get rid of all gunk/dust from that region.Thankfully, it’s easy to install a new CMOS battery in your laptop. maybe some dust, or something is shorting the battery. In attemplt to repair, you could wash the motherboard. ![]() Connect the battery in series with a mili-amp meter (or microamp meter) and determine what kind of current is drawn at rest. (running on 8years already)įrom what you say, is abnormal consumption. In contrast, never had a problem with bios battery for another lab that has the pc's permanently connected to mains. and that happens to be 2months every year. we don't need them all time in that lab, so they are stored in a pile somewhere out of the way, and put them on desks only when we need them. (those computers are really old, running old software in a university lab. I found that PC's that are unused for long time and unplugged from the wall tend to drain batteries faster then the computers that are plugged in all time.īetween 30 PC's I change each year 5batteries. It only takes a fraction of the power of a really small led to enable CMOS. Not sure why the battery is depleting so fast, it's only job is to keep that list alive, which lasts for years, so unless there's some sort of direct short on that cmos chip, it normally goes nowhere or does anything. Remove the battery and the list is wiped, forces bios to start from scratch. The battery is what supplies power to that CMOS chip at all times, so it retains the list. You don't really reset bios, you really reset CMOS by wiping out that list/memory so forcing the bios to get up off its comfy seat and go find everything itself. CMOS is the sheet music, it's the list of instructions/memory of components inside the pc that bios uses to do its thing. When you turn on the pc, bios checks all the components, kicks them awake, directs them how to play, when and where etc. For real world or OC, you can disable that, it's next to useless.īios is Basic input/output, it's like a symphony conductor. If the pc is sitting idle or doing light work like websurfing, there's no real need for uber high voltages and current to be going through the mobo at all times, so phase control cuts it down a little. Phase control is the amount of power supplied to the cpu by the motherboard. So the question is, can a MoBo overuse the battery, which I think can happen, and if it is so, is there a way to solve this with either repairing it or any other way. ![]() (forgot to mention but when I try to look at the batterys remaining power, there is none left.) Keeps the loop away, and let me do the "PC things" as a normal PC. Trying the old ones didn't work, but a new battery surely works. The solution I found was to change the battery with a brand-new one. Also sometimes the screen doesn't even show up, and goes into a loop of booting, no screen showing up, neither the keyboards and such keep a continuous power in (or on?) them. Problem is that whenever the PC turns on, there is not a problem about keeping it up, no puns intended, but when I turn it off and try to power it on once again after like one day, BIOS gives me the "yo battery ain workin, keep it changed dude" message F1 to Setup, F2 to Continue screen and does not continue booting if I choose to do so. Hello, and let me get into the problem, or the question I might say.Īll my components work pretty well, except MoBo I guess.
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