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HP Pavilion zv6000 notebook PC is shutting down on its own

by fordthefin / December 3, 2006 8:22 AM PST

For some reason last night my laptop just shut off. no reason, no warning, like i'd just disconnected the battery and the power cord simultaneously. Since then it has done this again once or twice, and i have no idea why. I'd assume some sort of battery failure, but it only seems to happen when the cord is connected (although i haven't tested this well, its just that i have the machine running next to me right now, and it's not plugged in and hasn't shut off, and the lack of wall power is the only difference i can think of between now and before). So in short, pointed english, the problem is that my computer likes to shut off as if i've been holding the power button down, without any warning or error message of any kind.

As i said, it's an HP pavilion zv6000 with an Athlon 64 processor, 100 GB HD, 512 MB RAM, the hard drive is full enough that i've been looking into an affordable outer HD for storage, i haven't defragged in way too long but now i'm afraid to. That's all the tech specs that come to mind. Oh yea, i run windows XP Professional.

Also, i dunno if any of this will help the diagnosis, but i sometimes leave the power cord in the wall without the computer attached, sometimes overnight, i keep the computer plugged in about ninety percent of the time unless i'm transporting it, and it's taken about half an hour to find this page, register and post and it has yet to shutoff on its own, i suspect that this is becuase it isn't plugged in. Any suggestion would help, as i'm trying to save for a move and can't really afford much tech support unless i wanna live with my parents for another month. I could also just use knowledge about the average price of a new power cord (or battery) and the best place to go for that, as the problem seems to be with power.

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The clue may be that power cord. Here's why.
by R. Proffitt Forum moderator / December 3, 2006 8:32 AM PST

Under AC power the unit's CPU is usually set to run at full speed. A recurring issue with laptops is that most owners treat them like an appliance never thinking the unit needs attention to dusting and cleaning of the heatsinks or checking the fans and air vents. Here's an example cleanup.

http://www.short-media.com/review.php?r=258

Now that's the more extreme cleanup but note figure 5 and that lint buildup?

You should be able to use simpler methods like an compressed air can (use with care.)

Bob

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ok. so...
by fordthefin / December 3, 2006 3:01 PM PST

is there a way to set the processor to run under capacity so that i can still use it while i find a local shop to clean it out? your idea seems to fit the problem to a T, i have owned this computer for over a year and never once cracked the case, and don't trust myself to do so. So, while i try to find someone i DO trust, is there a way to set it to rum on 'low,' so to speak?

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(NT) It's in the XP control panel. (power)
by R. Proffitt Forum moderator / December 3, 2006 3:02 PM PST
In reply to: ok. so...
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New Development
by fordthefin / December 5, 2006 7:52 AM PST

Ok, i've been led to beleive that the issue has something to do with the actual power cord or the connection on the computer itself. This is because i have been trying to use the computer, and it has been working just fine until i try to plug it in. It then shuts off within seconds, usually immediately. This makes it difficult to use, as the battery only lasts around 1-1.5 hours (Big friggin widescreen display, old battery, yadda yadda).

Also, when i plug it in when it's off (To try to charge the battery so i can use it later) the charging light refuses to come on most of the time, and flickers on and off when i jiggle the connection (the fact that i CAN jiggle the connector as much as i can freaks me out a bit). Anyone have any clue what the issue may be here? Am i gonna have to buy a new cord? Those babies aren't exactly cheap on a part-time college student income.

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Or take it to the electronics department.
by R. Proffitt Forum moderator / December 5, 2006 8:22 AM PST
In reply to: New Development

Many colleges have a nice electronics department with people skilled in the fine art of soldering. They'll know to look for that cracked solder pad and could touch it up.

I've seen this failure before and repaired too many. Almost always it's someone the carts the machine around with the power cord plugged in or has been a little rough on that area. All of them have denied this.

Bob

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