Posts tagged laptops
www.total-laptops.com – pc pitstop – laptop battery fire
by the jof
Apple Laptop Batteries Hacked – Laptop’s battery useless
Attackers could use a password weakness to render your laptop’s battery useless–or overcharge it to start a fire, researcher warns.
Attackers could turn your laptop’s battery into a useless brick, or worse, overcharge it to the point where it starts a fire.
That warning comes by way of security expert Charlie Miller, who said that he’s successfully reverse-engineered Apple laptop “smart batteries,” enabling him to reprogram their embedded controllers. Miller, who’s a researcher at consultancy Accuvant, plans to document his research at next month’s Black Hat conference in Las Vegas.
According to Miller’s Black Hat talk description, “being able to control the working smart battery and smart battery host may be enough to cause safety issues, such as overcharging or fire.” Notably, when the lithium-ion batteries used in laptops overheat, they can rupture, causing injuries.
On the other hand, well-manufactured batteries also include numerous safety features, such as the ability to shut down in the event of overheating, as well as circuit interrupters designed to prevent overcharging or undercharging.
In his forthcoming talk, Miller plans to will demonstrate how to modify the firmware used by Apple smart batteries, disable their anti-tampering checksum, and reprogram the battery firmware using “a simple API,” which he plans to release publicly. While Miller’s research focused on MacBook, MacBook Pro, and MacBook Air laptops from Apple–with whom he’s already shared the results of his research–he suspects that Windows laptop batteries would be susceptible to firmware attacks.
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Miller reverse-engineered Apple’s battery firmware after the company issued a related firmware update in 2009. From there, he discovered the default password used to secure batteries, and from there, he learned how to read the values from that firmware and alter how the battery firmware interacts with the laptop. To date, Miller said he’s successfully bricked seven Mac laptops via battery firmware hacks.
Interestingly, however, reprogramming the battery firmware could also allow an attacker to introduce persistent malware into the laptop. “You could put a whole hard drive in, reinstall the software, flash the BIOS, and every time it would reattack,” Miller told Forbes.com. “There would be no way to eradicate or detect it other than removing the battery.”
Despite the apparent threat vector, battery firmware offers essential functionality, providing giving users precise readings of a laptop’s remaining charge, operating time, and estimated recharge time, while also allowing the battery to control the voltage and current being provided by a charger.
But how feasible are attacks against battery firmware? Offering some perspective, Paul Ducklin, head of technology for Sophos in the Asia Pacific region, said in a blog post that when it comes to reprogramming controllers with field-updatable firmware, laptop batteries aren’t the only option. Indeed, an attacker could also target “the motherboard itself, your wireless card, your 3G modem, network card, graphics device, storage devices, and much more,” he said.
To address the Apple laptop battery firmware vulnerability, Miller plans to release a utility called “Caulkgun” that will allow Apple users to change their laptop battery passwords. On the upside, the utility would prevent an attacker from exploiting an Apple battery pack’s embedded controller. On the downside, it would block any Apple patches, performance enhancements, or security updates from updating the battery’s firmware, unless the user first restored the battery’s default password.
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This tutorial shows you how to monitor and check your laptop or notebook’s Battery Wear, and the charge capacity left after months or years of use, and how much battery life is left using a free software called Battery Bar. It gives a full display of features such as Milliwatt Hours, percentage of use and run time. Windows: Battery Bar: osirisdevelopment.com MAC: Coconut Battery: www.coconut-flavour.com FULL Story on reviving Battery Life: news.yahoo.com ————————- How I Make Money online-? ?budurl.com ?FOLLOW Me on Twitter!: Twitter.com Website: yutubemedia.com
Check out laptopbatterycharging.com on how to take care of your laptop.
What is LoJack for Laptops?
LoJack for Laptops is software that is installed on your Mac or PC behind the scenes and can report in to Computrace LoJack it’s location most of the time if your PC is stolen.
According to LoJack for Laptops their service works like this: if your computer is stolen:
1. You file a police report and notify our Recovery Team.
2. When your stolen computer contacts our Monitoring Center, it is placed on high-alert and starts calling us every 15 minutes, allowing our Recovery Team to closely track your computer’s location.
3. Our Recovery Team provides law enforcement with tracking information and documentation essential for procuring search warrants and leading them to the location of your computer.
4. The police recover your computer and return it to you!
The company claims to recover 3 out of 4 stolen computers that use their service. The company says that their software is tamperproof and still stays on your computer even if the drive is reformatted or a new OS is installed.
So why did I pay to better protect my laptop?
Well for a couple of reasons.
First off I’ve had laptops stolen in the past. It really sucks. A lot of times what sucks even worse than the laptop theft are the files that are stolen with a laptop. Even more than this though is the sense of victimization that you feel when someone has stolen something from you. The satisfaction of knowing that someone who stole from me was caught and hopefully pays a legal price is probably worth more to me than even the value of the laptop itself.
Oftentimes someone who steals a laptop is likely involved in other crime and so it would also make me feel good if they caught them and other people got their stolen property back too.
Also I’m out and about quite a bit with my laptop. One of my main uses for my laptop is to offload photos that I take from my CF cards to the laptop’s hard drive. For this reason my laptop goes with me in my photo backpack every single day. Frequently I worry about walking around with so much expensive gear on me. Not only do I keep my laptop with me everywhere, but I keep my Canon 5D and 4 L Series lenses with me everywhere I go as well. There is a good chance that if someone stole my backpack and I could track the laptop that I might also be able to recover my camera, lenses, batteries and CF cards if they were stolen with it too.
I had my first Canon 5D stolen in the Bahamas two years ago and that really sucked too.
Chances are of course that your laptop will not be stolen. LoJack cites pretty high statistics though. They say 1/10 laptops are lost or stolen and 97% are never recovered. I think if you ask around you probably already know someone who has had one stolen before. For me, the cost of per year for a little extra piece of mind is well worth it.
Thanks, by the way, to Martin Taylor who tipped me off to LoJack for Laptops. I found out about this service when I posted a note on FriendFeed saying I’d pay 0 for a chip to track my laptop with GPS and he brought this service to my attention.
Image by noon3butm3
note the edge
For Ye Olde Rusty Laptops
Image by mendhak
After going through the Giant’s Cave tunnels, with your back bent and legs hunched for over 200 meters, you feel like you’re stepping back in time and doing what the ‘ancients’ did as they made their way to the chapel to worship.
And just as they did, you finally emerge on the cliff face, with the river Avon roaring below you, the immensity of the cliffs overpowering you and an ancient wall socket for all ye olde laptops beckoning you to recharge your batteries. And it was 9 feet off the ground; they must have been giants.
Just changed me laptops battery to a 9 cell one.
Image by jadijadi
MacBook Pro battery
Image by DavidPitkin
My MacBook Pro that does get really really hot had its battery start to bulge out of the case!
Luckily Apple support is going to send me a new battery. They were not very helpful when I asked about the excessive heat from the laptop. He did tell me that the laptop was not to be put on your "lap" and should be a on a hard surface. I told him that it also gets extremely hot when it is in my bag and sleeping. In response to that he stopped just short of telling me not to put it to sleep. The fact that "it has an Intel chip in it and they get very hot" was also repeated over and over. Ugh.
So much for my extra laptop battery
Image by dolapo
Here’s a quick look at some of the best rated gaming laptops on the market. Find out what are and why they made the list. Presented by www.bizwaremagic.com and www.laptopcomputerguide.org Keep in mind, many gamers wouldn’t be caught dead using a laptop for gaming instead of a desktop PC. They argue gaming laptops are too pricey, often overheat, have poor battery life, and they can’t be easily upgraded. However, despite this view, gaming laptops have become extremely popular with the buying public and the customer is always right. Discover which gaming laptops are receiving all the attention at the moment; wait a few weeks, and this list will probably change!
video.news.sky.com Sky News has found that some computer repair shops are illegally accessing personal data on customers’ hard drives – and even trying to hack their bank accounts. Sky’s Home Affairs Correspondent Mark White reports.
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The Portégé R700 and Satellite R630 are Toshiba’s most advanced ultra-portable laptops to date. Evolved from Toshiba’s impressive history of laptop manufacturing, both the Portégé R700 and Satellite R630 are true engineering feats, packing the latest class-leading hardware such as Intel Core series processors and Toshiba’s Airflow Cooling technology, and fitting it into a sublimely thin and light body. The Portégé R700 & Satellite R630 laptops have up to 8 hours battery life.
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Laptop Battery Chargers For Consistent Performance Of Laptops
Every person who owns a laptop will definitely understand the requirement of laptop batter chargers. I would in fact comment that laptop chargers are the most important accessory among all your laptop kit. Be it during a travel or even to watch a movie, it is important to charge your laptop for non stop usage. Without a laptop charger, you will not be able to use the laptop for a longer time.
Laptop battery chargers help you get an exceeded performance of the original batteries. These chargers for laptops are manufactured by various brands with good quality. There are various brands and models of laptop chargers in the market. Laptop battery chargers are based on various factors like voltage, chemistry, amperage, capacity of the laptop battery chargers. It is important to get the right laptop battery chargers for your laptop to ensure right amount of power supply and compatibility.
There are quiet a lot of laptop battery charges in the market. Some of the famous or most popular chargers are laptop power charger for Presario 3000 series, Dell 20V adapter charger, HP battery chargers, Acer laptop chargers, Mac book pro AC adapter etc in various price ranges.
Laptop battery chargers are available in various brands and with various performances. You can also check for various offers given by various websites for laptop chargers. Some websites offer you additional warranty period and promise that the chargers are 100 percent branded and non defective. As a consumer you can get your laptop battery chargers replaced or repaired in case of any defects with in the first 90 days of purchase. You also get 1 years warranty. Along with these purchase benefits, the consumers also get a 30 days money back policy if the consumer is not satisfied with the functioning or any issue with the chargers.
Apart from the regular offers, some websites gives free shipping too. You can also get special discounts for selected brands chargers for your laptop. There are used chargers sold for laptops at a very cheap rate. My recommendation for you is not to go for these used chargers as they do not last for a long time. Li-Ion battery Chargers for your laptop will not suffer from memory defect. So, there is no necessity for you to charge the battery completely or drain them completely for effective usage on weekly basis. You must check for this kind of feasibility when you go for battery chargers for your laptop. If you are a person who travels quiet often, then this will of great help to you.
It is also important to clean the battery and the charger too for effective usage. By keeping them clean, you can ensure good connectivity without any blockage due to dirt accumulation. You may use cotton to clean your charger and the battery. The ratings for chargers are based on Volts and Mill amperes. Chargers for laptops must be selected with the most Mill amperes or mAh.