Way to "spoof" computer into thinking CPU usage % is low?
Hey, my friend's dad wanted me to try to repair his laptop. It is a Sony VAIO PCG-K37, it is from liek 05 or 04, so it is kind of old, or at least I think so, doesn't really matter.
He said it has a bad fan, he took it to someone but all they did was lubricate the fan bearing and that was only temporary. So I take it apart clean off all of the crappy while silicon thermal paste, and replace with arctic silver 5, doesn't make a difference. The fan still gets very loud decently quickly, and will go from like full blast to very quiet very irradically. And I don't want to get a new fan because you have to buy the whole heatsink and the fan and that is expensive.
So I looked into it, and I don't think it is a temperature problem, I think it is a CPU usage percentage problem.
So I have speedfan open, like 4% of the CPU is being used, fan is very quiet, I open up CPU burn in or Prime95, and I start a test, instantly the CPU usage goes to 100% and the fans go to full blast, I close out of the program, CPU usage goes down to like 4 or 5 or whatever idle is, fans go back to quiet.
There is no way that the temperature of the CPU goes up that high within like 1 second, and then back down to idle within another second, so I STRONLGY doubt that the fans are controlled thru temperature, I think they are controller thru CPU usage percentage.
So is there a way, that I can set the CPU usage to a static 5%, so the fans think the CPU is doing jack,and they spin the fans slow, but in reality, the CPU could be going 100% burning up....I just want to do this so to test to see if it really is based on % usage and not temps.
The laptop doesn't have a floppy disk, so I am going to have to format my USB drive as a bootable disk and boot from it, although I don't know if the laptop boots from USB drives, I know it will boot from a CD though, so I will try out something like that, to see if the motherboard controls fans via CPU usage, or if the OS does such as Windows.