Laptop randomly shuts off

[-Setro-]

My laptop is running perfectly, and then it just randomly decides, "hey forget this", and turns itself off. It doesn't run the shut down process, it's just on in one second, and turns itself off, you know?
I don't know why this is happening. My laptop feels a tiny bit warm, but not hot, and I just cleaned the vents out.
What's happening?
I recently took the HD out to see if it could fit in another laptop, but I put it back in afterwards. Don't think this is the issue.

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[NML Cygni]

It could be a hidden virus. Check in the files or whatever. I don't know much about PCs and computers so IDK.

[Blockzillahead]

be more specific. what are you running in the background. what do you do when it shuts off. does it run without the power cord plugged in?

[Derontchi]

Charge it?

[-Setro-]

It's plugged in all day, and I haven't installed anything non-popular so I don't think its a virus.

[chubaka452]

It's plugged in all day, and I haven't installed anything non-popular so I don't think its a virus.

Run a scan quickly! AVG, Kaspersky are recommended. Not Norton, mc-whatever, avast (this one is questionable).

I'm pretty sure you can get a virus just by looking on a website or something.

[ßlöükfáce]

does everything turn off or just the screen?

[Kishgal]

A virus will not force your computer to suddenly lose power.
Can you still turn it on or what?

[Foxscotch]

it might be getting too hot

[Masterlegodude]

I've had this problem and i can only assume it's either the battery or the fan isn't doing it's job, like, my laptop would sometimes shut off even when it wasn't really hot

So either try using a different or new battery, if the problem still happens, you can try getting an external USB fan

I've tried about 3 different batteries and the problem kept happening suddenly after weeks or even months of it not happening, so after getting an external fan, i haven't had that problem since then

[Blockzillahead]

It's plugged in all day, and I haven't installed anything non-popular so I don't think its a virus.

thanks for being extremely specific. this will help us help you a lot quicker by telling us vague information about a vague topic thank you :-)

[Swat 3]

It could actually be static, because you keep it plugged in all day with the battery inside the laptop.

Which is bad.

[MrKitKat]

overheating

[Jaxx]

it might be getting too hot

overheating

first thing you should suspect. look into a laptop USB cooler.

[Planr]

It sounds like a disruption of the power flow from the laptop's power supply to the rest of the computer.