Toshiba Satellite r945-p440
Motherboard: FAM2SY2 A3256A
I do not have a schematic or board file
I usually let it go to sleep every time I use it because it is nearly always plugged in, with occasional shutdowns to reset things. Then it started to hard crash every time it tried to come out of sleep. The lights would come on for half a second but before anything shows on the screen they would all shut off and it would boot up as if I had shut it down completely (except that windows knows it didn't), and when it comes back on the fan ramps up to full and stays there perpetually until it successfully starts/restarts/comes out of sleep normally. The error logs don't give any indication that anything went wrong except the kernel power failure indicating that it was shut off unexpectedly.
This started happening intermittently. A couple times over a couple months, then most times over a couple days, then nearly every time, and now it power cycles over and over again, trying to come to life and failing until I pull the battery, though it will occasionally come out of that after only 3 or 4 cycles and actually start up. But the fan always runs full-blast until it gets a clean start. Once running it runs completely normally until put into any low powered state, including full shutdown. The trouble is getting it there.
My very limited experience and intuition says that it is probably a weakening/dirty power rail that can't handle the load at startup, and that since the symptoms are not consistent it is unlikely to be a problem in the BIOS/EC. However, it runs just fine and can even handle heavy loads such as videos, games, USB devices, and other things that may strain the power rails, so I'm not sure.
This is the only computer I use and the same one I am sending this message on. I am looking into getting a new computer but can't afford to yet. I turned off sleep and don't shut it down anymore, and it has been running for over a month solid. This is not sustainable, but I am concerned that once I shut it down to diagnose any thing more I might not get it started again, so I would like some input before I attempt it.
Thanks!
Motherboard: FAM2SY2 A3256A
I do not have a schematic or board file
I usually let it go to sleep every time I use it because it is nearly always plugged in, with occasional shutdowns to reset things. Then it started to hard crash every time it tried to come out of sleep. The lights would come on for half a second but before anything shows on the screen they would all shut off and it would boot up as if I had shut it down completely (except that windows knows it didn't), and when it comes back on the fan ramps up to full and stays there perpetually until it successfully starts/restarts/comes out of sleep normally. The error logs don't give any indication that anything went wrong except the kernel power failure indicating that it was shut off unexpectedly.
This started happening intermittently. A couple times over a couple months, then most times over a couple days, then nearly every time, and now it power cycles over and over again, trying to come to life and failing until I pull the battery, though it will occasionally come out of that after only 3 or 4 cycles and actually start up. But the fan always runs full-blast until it gets a clean start. Once running it runs completely normally until put into any low powered state, including full shutdown. The trouble is getting it there.
My very limited experience and intuition says that it is probably a weakening/dirty power rail that can't handle the load at startup, and that since the symptoms are not consistent it is unlikely to be a problem in the BIOS/EC. However, it runs just fine and can even handle heavy loads such as videos, games, USB devices, and other things that may strain the power rails, so I'm not sure.
This is the only computer I use and the same one I am sending this message on. I am looking into getting a new computer but can't afford to yet. I turned off sleep and don't shut it down anymore, and it has been running for over a month solid. This is not sustainable, but I am concerned that once I shut it down to diagnose any thing more I might not get it started again, so I would like some input before I attempt it.
Thanks!
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