HP Laptop suddenly turns off without warning. What's going on?

So I have a HP Pavillion zv5320ca that likes to suddenly turn off now (not shut down...it just goes black and turns off like you pull out the AC connector). It starts to do this about 3 weeks ago. Before this, there was no problem for a few years. My HP Laptop is 4.5 years old today. It does this with the battery in and the battery out, hooked up to outlet power. About 3 weeks ago, I was typing on the keyboard and suddenly the battery icon appeared even when AC was plug-in. I have to unplug and re-plug the AC connector at the back of laptop, and then the battery icon would disappear. (Now my old battery doesn't keep a charge anymore). I know it isn't a heat problem, because I can turn the computer on first thing in the morning and it will sometimes shut off within 4 or 5 seconds. And my heat fans are clean (I clean them every 3 months). The CPU was not feeling hot at the bottom, and my Notebook Hardware Control software showed CPU temperature as +42C when this happened. So the nature of it is, I can turn the computer on, and sometimes it shuts off a few seconds after that, sometimes in the middle of the XP loading screen, and sometimes while Windows is loaded. I can use it for 8 hours and have no problems, or sometimes it will shut off 3 or 4 times within 20 minutes...or I can keep trying to turn it on, and it immediately shuts off. I need to re-plug the AC connector before the problem goes away, only to appear again later. What is going on? Anyone has any advice to solve this problem? Thanks in advance.

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Joe Martin8 years ago
It sounds like it could be the power jack in the laptop it's self, It's took me a long time and a bit practise to replace these myself, If you don't have the experience I suggest you take it into a shop and get the power jack replaced for a new one.
This sounds serious enough to take into a shop. they know what they are doing, and will determine the problem soon enough... Until then, save your work often.
i have just read your reply about taking laptop/pc,s to shops..i took mine to a shop with the same problem and was told it was my harddrive..i had a new one installed,and they also said they had checked the laptop thoroughly and it was running perfect..i got it home and within half an hour the same thing happened.hey hey they put another drive in and guess what the same problem exists...from now on i will learn how to do things myself .i would have been easier and cheaper to go out and buy a new one.i for one will never trust shops again..ps..2 shops 2 harddrives 2 lots of expense.and one big problem still unsolved.the fan works,i run it from mains so cant blame battery..it does overheat,i have just cleaned the fan myself,i only got the laptop back today and its turned off at least 9 times in 4hours...
canada1234 (author) 8 years ago
Thanks guys. I think Joe Martin is correct. I will take it to a shop to replace the power jack.
noah968 years ago
I don't know for sure, but I'd say that it is either a problem with your power assembly, or it might be a problem with an overloaded hard drive/ processory if it can't even load all together some of the time. Martin is right, you should probably take it into a shop
lemonie8 years ago
Old battery, consider replacing it. L