Hello,
I have had increasing troubles with my G750JH, to the point that I simply can't use it anymore. I've gone through 13 pages after a research, I don't think I've seen the exact same trouble, so here it is.
I think it actually has 2 different problems that may or may not be related.
1) I think this is the first one that appeared (although I can't be sure, as I will explain later in this post): the CPU fan started doing a lot of noise for seemingly no reason. I am not entirely sure wether it is a "regular noise" (the fans just spinning real fast) or a weird noise (for example the fans hitting on something, on being slightly out of their rotation axis).
I then installed a software to monitor CPU temperature: the fan would make a lot of noise at temperatures so low as 50°C. It would also make A LOT of noise starting up, so presumably the CPU couldn't possibly already be hot?
A few times, the computer would also shut itself down when the CPU's temperature went over 70°C (not 100% sure it was the cause, but it seemed to be)
I figured it was simply very dirty, since i hadn't cleaned it in a year (i know, I know, I'm sorry..). So i opened it up (which I had never done before), and tried to clean the fan as best I could, since it was indeed dirty.
Unfortunately, it didn't solve the issue: the fan kept making a lot of noise even when there was activity (litteraly, even when I was on the desktop doing nothing)
Using it then, I had to be careful not to use several softwares at the same time, in order to keep the CPU temperature low enough so that the laptop wouldn't shut down.. 😕
In the meantime, another problem appeared. I think it appeared some time after the first one did, but I'm not sure they're related. I'll add that the second problem appeared before I opened the laptop up, so it is not something I did there.
2) The second problem is that the computer cannot reboot. More precisely, once it is shut down, it won't reboot for a while. (how long, i will expend on that later).
What happens exactly when I press the power button is that the power button light, and the leds on the front of the laptop turn on, the CPU fan starts making the usual heavy noise, i THINK i also hear the hard drive, but I'm not sure it's always the case. However, the screen and the keyboard do not turn on at all: no light at all.
Then nothing happens except for the CPU fan making noise, and sometimes the computer will eventually shut down (sometimes withing 5 seconds, sometimes longer, and sometimes not at all)
This problem also evolved over last weeks: when i first noticed it, the computer wouldn't start for something like 1 hour, but after that i would work as usual. But then the "resting time" needed, as i like to call it, kept increasing. Last time I managed to turn it on, i had to wait 4 days.
Today, it's been 4 days and it's still not turning on.
I've tried numerous solutions that usually come up in this situation: pressing power for 45 seconds, unplug battery and charger and press power for 45 seconds, let the computer unplugged and with no battery for a day, let the computer plugged for a day, reset the charger, etc.. Nothing worked.
I would add that this problem appeared when I was still running windows 8.0. I switched to 8.1 and the problem remained.
Does anyone here have any idea what could cause these issues?
My main problem is that I am kinda scared to try to use the warranty: when I opened it up, I messed up taking the keyboard off, and now the touch pad isn't working any more. I am afraid they could use this as an excuse to cancel the warranty.
Also, I use it a lot and I'm afraid it'd take a long time to get it fixed, so I'm still hoping to fix it myself.
Last time i managed to turn it on, i decided to simply never turn it off again (I need it on a daily basis for another month, then I can send it back to repair :/), but after a few days it shut down on its own as described earlier.
Thank you in advance for your help! I remain available for any further question.
PS: Please forgive me for my English, I am french 🙂
