Home » Questions » Computers [ Ask a new question ]

Why is my laptop randomly shutting itself off?

Why is my laptop randomly shutting itself off?

Lately my IdeaPad U350 has been shutting itself down without any prompt or notification. It's not the normal Windows shutdown, either. The screen just goes black and it turns off immediately. Sometimes it will work for an hour before this happens, and sometimes less. I noticed that if I let it sit off for a while between shutdowns, it will last a bit longer. Any help is appreciated.

Asked by: Guest | Views: 223
Total answers/comments: 6
Guest [Entry]

"The following solved it for me....

To do it via the Power Options, right click the battery icon (or electrical plug icon) in the lower left corner of the screen, then...

1. Select a power plan and then click ""Change plan settings""

2. Click ""Change Advanced Power Settings""

3. Look for ""Processor power management"" and expand it

4. Expand ""Maximum processor state""

You can now enter the percentage usage of the CPU while on battery and plugged in.

Note that it does not work the way you think it would work. Meaning if you set the CPU to 90% it will run at 90% of the stock clockspeed. No... it's not like that. For example, my i5-2410m has a stock speed of 2.3GHz. Turbo boost overclocks it to as high as 2.9GHz when stressed.

100% = Turbo Boost on.

99% = Turbo Boost off. CPU runs at 2.3GHz

78% - 98% = 1.796GHz

69% - 77% = 1.596GHz

60% - 68% = 1.397GHz

So you get the picture."
Guest [Entry]

It sounds like your laptop is overheating. The first thing to test is making sure that your fan is working. If you don't hear it and can't feel any airflow from the exhaust vent, then either your fan or your laptop's fan controller (which is located on the motherboard) is broken. If your fan is working, then the thermal paste between the CPU and the heatsink likely isn't transferring heat properly. Fixing this will require disassembling your laptop and applying new thermal paste. I recommend Arctic Silver 5 or Noctua NT-H1 thermal paste.
Guest [Entry]

"I have a lenovo x220 and had the same problem. Altough I checked the temp and it wasn’t excessive I have just changed the thermal paste and it has been working for 5 hours without shutting down. Before I couldn’t use it for 20 minutes and afterwards it kept shutting down all the time, even when idle even in the bios. I found a forum thread where this was the solution for many people with the same lenovo.

Techs will tell you to change the motherboard. But it seems that this worked out for many people with this problem."
Guest [Entry]

Another way that should work: right-click the mini power icon on one end of your taskbar. Select Power Options. This will open a window with power settings in Control Panel. Select a plan. (with the newest w10 there should just be one unless you have a custom because it is programmed to be adjustable (balanced)). Click change lan settings then click change advanced power settings. In the new power settings popup expand hard disk and then expand turn off hard disk after and click the down arrow until it says "Never" do this for both battery and when plugged in. this is the solution i found after reading the original answer to this issue.
Guest [Entry]

I fixed mine by replacing the cooling paste never drops out anymore. It shut down every 5 minutes.
Guest [Entry]

Not really solve the issue on my side but upon reducing power consumption items like removing my headset and change to a normal mouse (not gaming mouse), then turning off my screen doesn’t show anymore