HP Elitebook 8440p overheating

HP Elitebook 8440p overheating

You can get used 8440p laptops pretty cheaply because HP Elitebook 8440p overheating is rather common. Symptoms of overheating include unexpected reboots, shutting down, and bluescreens.

The problems with the cooling system are unfortunate. They have nice keyboards, they’re easy to work on, and they’re reliable otherwise, so they’d be nice laptops if they didn’t overheat so much. Here’s how to improve their cooling so you can get a bargain–buying off-lease business laptops is a great way to save money.

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What to do about a router dropping connections

A former classmate and coworker contacted me with a question.

My router is about 5 years old. I have a cable modem and a router. The cable modem is fine. The router keeps connecting and disconnecting from the internet…used to happen occasionally, now happens all the time. I reset it and it works for a while, then disconnects. Is it time for a new router or do you think something else is going on?

I see two options. Read more

Heat compound and reliability

It’s known by many names. Heat sink grease. Thermal compound. Heat sink compound.
It comes in tubes or syringes. Cost varies from a buck or two to twenty. The cheap stuff is plain old grease. The expensive stuff is made of exotic materials including silver.

Everyone agrees compound makes heat go from the chip to the heatsink above better. Everyone disagrees over what’s the best to use. Holy wars ensue. Feelings are hurt. Egos are bruised. Money is wasted. Passive voice annoys.

Dan’s Data did a comparison of four different compounds. He also included two rather unconventional–ahem–substances. What did he find does the best job of conducting heat between a CPU and a heat sink?

Toothpaste.

Dern. I was rooting for the Vegemite. (At least the Vegemite beat out Arctic Silver.)

I’m sure you don’t believe me, so you can read about it… I won’t give you the URL just yet. Dan’s point was that there’s no measurable difference between different things people use as thermal compound. So there’s very little point in paying $20 for a syringe of exotic compound. Being a tightwad and using a glop of toothpaste isn’t a good idea though, because it’ll dry out too quickly. Plus it’s apt to cause other problems. But there’s nothing inherently wrong with the $1 stuff. The real key is–against conventional wisdom–using a thin layer of the stuff you’re using. Remember preschool, where we all thought since a little glue holds things well, a lot of glue must hold it even better? Same principle. A little dab’ll do ya.

This was certainly the most amusing hardware story I’ve read in a long time. Give it a look.

I’ll be back with adventures of my own tomorrow.

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