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HP Elitebook 8440p overheating

Dave Farquhar Hardware April 28, 2017March 14, 2021Arctic Silver, baseboards, capacitor, extra mile, hp, intel, power button, prime95, super glue, Windows 10

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.

Dave Farquhar

David Farquhar is a computer security professional, entrepreneur, and author. He started his career as a part-time computer technician in 1994, worked his way up to system administrator by 1997, and has specialized in vulnerability management since 2013. He invests in real estate on the side and his hobbies include O gauge trains, baseball cards, and retro computers and video games. A University of Missouri graduate, he holds CISSP and Security+ certifications. He lives in St. Louis with his family.

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Lenovo Ideapad 100 laptop won’t turn on? Fix it

Dave Farquhar Hardware December 21, 2016April 8, 2017hp, lenovo, Lenovo Ideapad, power button

If your Lenovo Ideapad 100 won’t turn on, you’re in good company. I have a friend who has that problem with his Ideapad 100 laptop a lot. Incredibly, nobody I know of documented this fix before. Here’s the secret.

Dave Farquhar

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How to fix a computer that won’t turn on

Dave Farquhar Hardware December 8, 2016August 6, 2018atx power supply, hp, power button

When a computer won’t turn on, it’s usually a simple repair you can do yourself. Frequently it doesn’t cost anything and doesn’t require any parts. If you do need parts, you can expect it to cost $70 or less and get it done in less than an hour. Here’s how to fix a computer that won’t turn on.

Dave Farquhar

dfarq.homeip.net

Fix a Fujitsu Scansnap Code 43 error

Dave Farquhar Hardware September 30, 2016September 29, 2016power button, usb port, Windows 10, windows 7

When you connect a Fujitsu Scansnap scanner to a Windows machine over USB, it usually works fine–until the dreaded Error Code 43 error turns up. Here’s how to fix a Fujitsu Scansnap Code 43 error under Windows 7 or Windows 10.

Dave Farquhar

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Digiland tablet review

Dave Farquhar Android June 7, 2016October 11, 2019acer, android, Angry Birds, best buy, black friday, chrome, ips, mediatek, nexus, power button, usb port

The Digiland DL718M tablet is an inexpensive (sub-$40) tablet sold at consumer electronics stores like Best Buy. Make no mistake, a Digiland tablet is a basic tablet for basic needs. But given reasonable expectations you can buy one of these and be happy with it.

This isn’t a new market by any stretch. But it seems like tablets in this price range are usually Black Friday specials, or only available on online marketplaces far abroad. The Digiland DL718M, or today’s equivalent, is one you can get today if you want.

Dave Farquhar

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How to disassemble a Nook Simple Touch to remove or replace a battery

Dave Farquhar e-readers May 26, 2015June 13, 2022android, Nook Simple Touch, power button

If your Nook Simple Touch won’t power on, or is displaying a question mark (?) on its battery indicator, I have a four things to try. But before you go to the trouble of disassembly, try charging the device with a different charger. Some chargers fit more tightly than others, and as devices like these age, they can get picky about their chargers.

If a charger change doesn’t give you an easy fix, the next step is to disassemble it, unplug the battery, wait a good 30 seconds, then plug it back in and reassemble.

You’ll need a very small slotted screwdriver or another sharp and semi-flat object, and a T5 Torx screwdriver.

Dave Farquhar

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How to open an Asus Memo Pad 7 HD and fix the battery

Dave Farquhar Android, Hardware January 19, 2015September 10, 2017asus, Asus Memo Pad, Asus Memopad, capacitor, capacitors, Memo Pad, power button

My son’s Asus Memopad 7 HD would not power up or charge, and my earlier non-invasive solution wouldn’t fix it. Here’s how I opened it up to disconnect and reconnect the battery.

Always try holding the power button and volume down button first because that’s easier (see the link above for details), but if that doesn’t work, proceed to open the case.

While you’re in there, you can also fix an issue that may be causing the power or volume buttons to be hard to press or malfunction entirely. Dropping the tablet a lot makes this happen. If you have young children, you probably understand.

Another malady these tablets can develop is a battery with a question mark when charging. This will sometimes fix that issue as well.

Dave Farquhar

dfarq.homeip.net

Fixing an Asus Memopad 7 that wouldn’t power on

Dave Farquhar Android June 13, 2014December 12, 2015asus, Asus Memopad, power button, usb port

One night my son ran down the battery on his Memopad 7 and put it away, but didn’t put it on the charger or tell me about it. The next time he went to use it, it was dead.

I tried several different tricks I found online, including plugging it in overnight to the AC adapter, plugging it in overnight to a computer’s USB port, and holding down the power button for a full minute or even a full five minutes. None of it worked–the unit just wouldn’t power on or show any signs of life whatsoever.

Finally I resigned myself to the possibility I would have to send it in for service. Read more

Dave Farquhar

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Curious conspiracies… or maybe just progress all at once

Dave Farquhar security June 11, 2014October 5, 20191980s, 1990s, android, apple, atx power supply, BSD, chrome, IBM, intel, MBR, power button, TrueCrypt, UEFI, windows 8, Windows 9, Windows XP

In the wake of Truecrypt’s sudden implosion, someone sent me a link to this curious blog post. I can see why many people might find the timing interesting, but there are a number of details this particular blog post doesn’t get correct, and it actually spends most of its time talking about stuff that has little or nothing to do with Truecrypt.

What’s unclear to me is whether he’s trying to say the industry is deliberately sabotaging Truecrypt, or if he’s simply trying to make a list of things that are making life difficult for Truecrypt. His post bothers me a lot less if it’s just a laundry list of challenges, but either way, the inaccuracies remain. Read more

Dave Farquhar

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The Asus Memo Pad HD 7 review: It’s a nice inexpensive tablet

Dave Farquhar Android November 24, 2013November 24, 2013android, asus, Asus Memo Pad, Asus Memopad, benchmark, cyanogenmod, journalism, mediatek, Memo Pad, nexus, nvidia, Play Store, power button

I’ve been messing with an Asus Memopad, the 7-inch version. I think it’s a well-built, good-performing tablet for $149, and when you can get it on sale for less than that–and this is the time of year for that–I think it’s a great tablet for the money.

It’s not a high-end tablet. It has a 1280×800 screen, a quad-core 1.2 GHz Mediatek processor, a middling GPU, and 1 GB of RAM, and importantly, it includes a micro SD slot so you can add up to 32 GB of storage to it. The specs are all reasonable, but not mind-blowing. Most of the complaints I’ve seen about it are that it’s not a Nexus 7, but it’s 2/3 the price of a Nexus 7, too. When you compare it to other tablets in its price range, the worst you can say about it is that it holds its own. Read more

Dave Farquhar

dfarq.homeip.net

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