Showing posts with label on. Show all posts
Showing posts with label on. Show all posts

Sunday, July 27, 2014

Information on Used Laptops

Used laptops are those that have been used by a consumer for a length of time and then they are resold for a number of reasons. Used laptops offer the potential savings of hundreds of dollars over a new laptop. Used laptops are a cheaper alternative to buying new, and are a great investment for a laptop capable of performing many tasks. Used laptops are just like used cars you need to check them out and be sure of what you are purchasing first. Used laptops are for the most part are a good value for the money.

Buying
Buying from eBay, smaller used laptop websites and other shops or the classifieds can be successful; you just need to know what to look for. Buying a used laptop allows you to pick up technology which is still in use today although it may not have the most recent operating system. Buying a refurbished laptop doesnt mean youre stuck with an outdated machine, as most of the refurbished units will be updated with some of the most current technologies today. A refurbished laptop is an excellent choice if you are not comfortable with buying a used laptop plus the do come with a warranty.

Price
A number of certified dealers trade in eBay, Amazon and Yahoo stores, offering very tempting prices for used laptops. Regardless of the brand, medium priced used laptops in the range of $500.00 to $650.00 are considered good money savers for those who do not require using the fancier laptops. You can for instance get a laptop without wireless capabilities at a better price, and you can add a wireless card to your laptop and save additional money. You should be considering used laptop or refurbished laptop which can get you most if not all the features you want, without paying full price. The brands named laptops tend to have higher prices for the same features as some of the less popular brands.

Used laptops are perfect for students doing homework, a professional that only needs to operate a few programs, or for someone who just wants to access the internet without the bulk of a desktop. They are perfect for people wanting to use a mobile computer for only a couple of applications, but still want the mobility of a laptop. Used laptops are sold for a number of reasons one of the reasons might be due to purchase of a higher configuration laptop, or might be tired of using the laptop for some time and would just like to have a newer one. Used laptops are a viable option to own a laptop at if you are on a tight budget.

By: RR Smith

If you are looking for used laptops or refurbished laptops follow this link we have access to all makes and models with some tremendous saving available to you!

Used Laptops at http://www.used-laptop-deals.com

Article Source: http://EzineArticles.com/?expert=Robert_R_Smith

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Friday, July 18, 2014

How to fix video problem on HP laptops

How to fix video problem on HP laptops:
In this post I explain how you can fix a known video problem on some HP laptops without actually taking it apart. Most likely the fix is not permanent but this will buy you some time, enough to backup personal files or even use the laptop until you get a new one. There is no guaranty this fix work 100%.
Here are some HP models affected by this known video failure problem: HP Pavilion dv2000, dv6000, dv9000, tx1000 tablet PC, Compaq 700, v3000, v6000 and probably some others.
If you know more models, please mention them in comments after this post.

CAUSE OF THE PROBLEM:
As I know, the video problem somehow related to NVIDIA chip located on the motherboard. Overtime the NVIDIA chip separates from the motherboard and the laptop video fails.


SYMPTOMS OF THE PROBLEM:
When you turn on the laptop, all LEDs light up but there is no video on the laptop screen or external monitor. The laptop screen remains completely black and blank. The cooling fan spins as normal, on some models it stars spinning right away on other models after some time.
I found this trick mentioned by Walliot (comment 85) in this post. This trick called “towel fix” and used to fix “no video” issue in xbox360.
HOW TO FIX:
1. Remove laptop battery and hard drive.

2. Plug the AC adapter and turn on the laptop. Make sure the laptop is actually on, all LEDs should work.

3. Wrap the laptop with towels so all air intakes are closed.

4. Keeps the laptop wrapped in the towel for about one hours.

5. Unplug the AC adapter from the wall the let the laptop cool down (do not touch it for a while).

6. Unwrap the laptop and try tuning it on.
I didn’t really believe that this trick might work and tried it just because of curiosity but… IT WORKED!!!!
LAPTOP #1. HP tx1000 Tablet PC.

First, I tried this fix on a failed HP tx1000 Tablet PC.

I didn’t have paper towels at work but I had plenty of bubble wrap.

I closed the laptop in a tablet mode (with hard drive and battery removed), plugged the AC adapter and wrapped the laptop properly in bubble wrap.

After that I just waited for about two hours and unplugged AC adapter from the wall.

Waited for about 30 minutes and tried turning it on.

Success!!! The laptop started with video.

I just couldn’t stop and tried the fix on another failed laptop.
LAPTOP #2. HP Pavilion dv6000.

This is a different model with very similar failure symptoms. It turns on, all LED lights work but there is no video.
This time I didn’t something extra. To make sure there is no cool air coming into the laptop though bubble wrap, I closed all air vents with sticky tape.

After that I turned on the laptop from AC adapter (again with hard drive and battery removed) and wrapped the laptop base with bubble wrap.

The laptop was running like that for about 60-70 minutes but then I noticed that all LED lights went off. Not sure what happened, maybe the laptop overheated too much and shut down on its own. Anyway, I didn’t touch it for about 30 minutes and let it cool down.
My fix was successful again! The laptop turned on with video and booted to the desktop.

HOW THIS FIX WORKS:
Here’s my understanding of how this fix works.

When you run a laptop wrapped in towels (bubble wrap in my case), it gets very hot because there is no air circulation inside the heatsink. The heatsink and GPU (NVIDIA chip) run so hot that it melt solder between the chip and motherboard and the video chip gets resoldered to the motherboard.
Now I have to test for how long this fix last. :)
RELATED POSTS:
In one of the previous posts I explained how I fixed failed video chip by backing the motherboard in an oven.

In one of the following posts I explain how to reflow failed NVIDIA graphics chip with a heat gun.
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Sunday, July 13, 2014

Spilled Water On Laptop How To Clean It

Spilled water on laptop, how to clean it, when you spill water or a liquid on your laptop, the first step is to stop using the laptop immediately. Turn off the laptop, unplug the power adapter and remove the battery. The laptop should be disassembled as soon as possible and all internal parts should be inspected for liquid damage. Water or liquid spills on laptop can be very devastating and is capable of causing extensive damage to the laptop. For a step by step guide on how to take apart or disassemble a laptop click here. Take the following steps to solve the problem.

Step 1
Now remove the keyboard and take a closer look underneath it and search for water or liquid spills.

Step 2
Also check the motherboard for water or liquid spills.

Step 3
If there is liquid spill on the keyboard or motherboard, get a clean soft cloth and wipe the liquid spill on the keyboard and motherboard, when wiping the motherboard you have to be very careful to avoid damaging very small components on the board.

Step 4
If you find any corrosion on the motherboard, you can clean it with a toothbrush and 91%-99% isopropyl alcohol.

Step 5
Ensure that the motherboard and all the internal component of the laptop is completely dry before testing it.

Step 6
When the laptop has been confirmed to be in good working condition, follow the same process to assemble the laptop back.

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