Most common hardware problems in laptop pc

In this post I will summarize most common laptop or notebook hardware problems ever mentioned on this site. I will not be digging into the operating system related problems, only laptop hardware issues.

I’ll provide most common laptop failure descriptions and give some suggestions how to troubleshoot or repair the problem.

Problem 1.
Laptop doesn’t turn on at all.

Problem description: When you plug the AC adapter into the laptop, there are no lights turning on at all. When you push on the power button, nothing happens. The laptop appears to be completely dead, makes no sounds, no indications of life.

Possible problem:
- AC adapter failed and the battery discharged completely. First of all, test the AC adapter. If it’s dead, replace the adapter.
- DC jack separated from the motherboard (or DC jack broken) and the laptop doesn’t get any power from the AC adapter. In this case the DC jack has to be replaced.
- Laptop motherboard failed. If that’s the case, most likely the laptop not worth fixing.

Here are some tips for testing laptop AC adapter and DC jack connector.

Also, make sure to read step-by-step instructions for troubleshooting dead laptops.

Problem 2.
Laptop turns on but screen is blank.

Problem description: The laptop turns on, LED lights on the laptop turn on, cooling fan works but nothing appears on the screen. The screen is completely black and blank. There is no image on the screen at all, not even a very dim image.
Possible problem:
- This problem could be related to the memory failure. It’s possible one of the memory modules failed and the laptop doesn’t turn on because of that. In this case you can try resenting memory modules to make sure they are making good contact with the slot. You can try removing memory modules one by one and test the laptop with only one memory module installed. You can try replacing memory modules with new modules.
- If resenting/replacing memory modules doesn’t help, try removing the hard drive, DVD drive, modem, wireless card, keyboard, etc… In other words, disassemble the laptop to bare minimum and test again. If the laptop still doesn’t turn on, most likely you have failed motherboard or processor.

Problem 3.
Laptop turns on and off repeatedly.

Problem description:
The laptop turn on without showing any image on the screen. After a few seconds the laptop turns off by itself. Then it turns on and off again. It continue turning on and off repeatedly until you power off the laptop completely.
Possible problem:
Most likely it happens because of some kind of motherboard failure. You can try reseating/replacing memory as I described in the Problem 2. If it doesn’t help, I would say this is motherboard related failure.
In most cases it’s not worth replacing the motherboard, better to buy a new laptop.

Problem 4.
Laptop makes noise while running.

Problem description:
The laptop turns on and everything works fine, except it makes some constant weird grinding or rattling noises. Some laptops make noises all the time, other laptops have them intermittently.
Possible problem:
In most cases this noise is coming from the cooling fan or laptop hard drive. You can turn on the laptop, wait until it starts making noise and after that listen closely on the bottom of the laptop. If the laptop starts making noise when the cooling fan starts running, most likely you have a failing fan. Replace the cooling fan.
If the laptop makes noise even when the fan not spinning, probably it’s coming from the hard drive. Back up all personal data from the hard drive as soon as possible, it can fail any moment. Replace the hard drive.
Here’s another technique to figure out if the noise coming from the fan or hard drive. Remove the hard drive from the laptop and stat the laptop. Wait until it warms up and the fan starts spinning. If the laptop still makes same noise even when the hard drive removed, most likely it’s bad fan.

Problem 5.
Laptop shuts down or freezes while in use.

Problem description:
The laptop turns on and runs properly but after a while it freezes or shuts down without any warning. When it happens, the laptop feels hot on the bottom. Also, the cooling fan works harder than usual.
Possible problem:
Most likely this is heat related issue. It happens because the cooling module gets clogged with dust and the laptop cannot “breath” properly. The laptop shuts down or freezes because the processor (CPU) overheats. Cleaning the cooling fan and heatsink should fix the problem.

Problem 6.
Laptop battery not charging properly

Problem description:
The laptop battery stopped charging properly. It’s not charging at all or charges only after you adjust the position of AC adapter plug inside the power connector on the laptop.
Possible problem:
- Failed battery.  If the battery stopped charging completely try reconnecting the battery first. If it doesn’t help, remove the battery and try running the laptop just from AC adapter. If the laptop runs fine from AC adapter but doesn’t charge the battery at all, most likely it’s either bad battery or motherboard problem. Try replacing the battery first.
- Loose DC power connector. If the battery charges only after you adjust the position of AC adapter tip inside the connector, this is DC jack related problem.
Problem 7.
Screen light doesn’t work or fails while the laptop running.

Problem description:
The laptop starts properly but after a while the screen light turns off. The image still appears on the screen but it’s very dark. In some cases the screen light never starts but you still can see a very faint image on the screen. In all cases the laptop video appears to be fine on the external monitor or TV.
Possible problem:
Most likely it’s either the screen inverter or screen backlight lamp (CCFL) failure.  Both fail very similarly causing the screen light to go off. In order to trobuleshoot this kind of failure effectively, you’ll need some spare parts: either new working inverter or known good backlight lamp.

Problem 8.
Laptop has strange or garbled image on the screen.

Problem description:
The laptop turns on properly but shows bad, wrong or garbled image on the screen.
Possible problem:
- Graphics card failure. First of all, test your laptop with image output on the external monitor. If you see the same problem on the external screen, most likely this is graphics card related failure.
- If the problem appears only on the laptop screen, it could be related to one of the following: poor connection between the video cable and motherboard or LCD screen or failed video cable or failed LCD screen.

Problem 9.
Some laptop keyboard keys stopped working.

Problem description:
The laptop turns on and runs properly but some keyboard keys do not work at all or type wrong characters.
Possible problem:
Most likely this the keyboard failed. Laptop keyboards are not repairable. If some keys stopped working, you’ll have to replace the keyboard.

Problem 10.
Missing or broken keys on laptop keyboard.

Problem description:
A key got separated from the laptop keyboard.
Problem solution:
If a key got separated from the keyboard, it’s still possible to fix it without replacing the entire keyboard.
Hopefully you didn’t damage the key hinges.
If you have many keys missing, probably it makes sense to replace the whole keyboard.

Enjoy Your Leptop

Notebook or Laptop Buying Tips

Buying Tips

We have need to buy a notebook, mobile , or many other thinks. But we have no idea about of buying. There are a lot of notebook or Laptop buying guides designed to help an inexperienced user to buy the original  notebook. Some of these guides are best but some of them are not good. Here is a notebook buying guide I like it. Because it”s written on people’s language and not designed to sell you anything. This guide explains the difference between a budget notebook/Laptop, a mainstream notebook/Laptop and a gaming notebook/Laptop and what you should expect from your Notebook/Laptop.

Before you buy a laptop Make sure to check the size of the AC adapter . Usually, you can not see the AC adapter before you buy the laptop and open the box at home. You’ll be very surprised to see that your AC adapter is half-size of your computer. I did this mistake when I bought Sony Vaio PCG-FRV26. The AC adapter wasn’t designed for a portable computer at all.

READ MORE DETAILS

Laptop Pc Hang Problem Solution

Computer may be hang during working in Windows XP. In this time Not Responding message is shown. If you click the Close button then all working windows may close. You can avoid this problem by few steps. Just follow those steps...

1. Press "ctrl " + "alt" + "delete "  and open window task manager then click  "application " and click oping programme then click end task. 

or 

 
2.Go to "HERE FOR MORE"

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A few thousand words, take two

Author's note: I wrote this blog post a few days ago. Soon after posting it, I felt as if I shouldn't have and reverted it to a draft. I figured it wouldn't do any harm to remove it as it had only been up for a few seconds. It's been interesting to see the reaction of my friends and readers, some of whom disagreed with any revision after an article had been posted.

I believe in transparency. I don't intend for this to happen again; I'll be more cautious than before about what I post. I'd like to make it clear that the primary reason that I'm posting now what I did before primarily because my conscience is clear regarding it, not because of pressure.

I attribute my unsettled feelings to the fact that as I looked for images suitable to make into posters, I came across many unsavory images, despite my best efforts to avoid them. The effects of these images has diminished over the intervening days, but was intense. This experience has served to remind me how acutely dangerous pornography is. Needless to say, I'll be even more careful than before to avoid it.

Below this line, this post is identical to what I posted a few days ago.

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I hope my readers will enjoy the little posters I made. I don't mind if you take my ideas and modify them, but you might want to check with the owners of the images (listed below).

Yes, a healthy glow looks good. But all you need for that is to emerge occasionally from your cave.

I think that too many of us believe that we're actually more productive when under the influence. I don't buy it.

It has always mystified me that people extol alcohol for making social interactions easier. I think we'd be better off if we actually learned to face our fears. Also, ethanol reeks.

Secondhand smoke is vile. Please stop.

NYC is full of people who clearly spend time exercising – and who smoke. Clearly, their objective is not long life.

I'm not sure if I can think of anything that would send me running faster than a girl who smells like smoke. Gross.

But buying on credit seems to be normal. Why would you do that?

This one kind of sums up the rest of them.

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Original image sources:

coffee

cocktail

tanning bed

bogart

cigarette

ripped guy smoking

ostrich sign

credit cards

Switching gears

This weekend, I wrote a post. It was a little snarky and maybe that's why I had second thoughts about posting it. So I reverted it to a draft and removed all external links to it.

It didn't take long to discover that my feed still had the article. Anyone who follows my blog using a feed aggregator (like Google Reader, Thunderbird, or Outlook) can still see it, although the pictures in it are now gone (after I went to Picasa to delete them myself).

I've been a little bothered by the complication of blogger. The HTML it produces is ridiculously decorated. And there's the issue of Google Analytics; I trust Google to be responsible with the data its analytics tools collect, but I don't know that I want my readers to have to be tracked to read my postings. And there's the simple fact that it isn't my server and it's not under my control. Most importantly, conversations go to blogger to die because the default is for no email notification to be sent for follow-up comments. So people comment and then never know that anyone responded.

On the other hand, maintaining my own server is no trivial task. It'd cost money, even if I only wanted a domain name registration – and that would mean paying for power and cooling for my own server. I'd be responsible for updating it. It'd take time.

But I sure would learn a lot writing my own blog.

So I will. But I'll probably end up just using wordpress in the end. Incidentally, keep your eyes open for a change of location.

Sometimes I dance and philosophize at the same time

I hope this post won't offend any real philosophers out there. I just think about things. A lot. And I try to get to root causes.

I went dancing tonight. I knew it was a swing club. I wasn't sure what exactly to expect, as there are a lot of variants of swing. It turns out that it was a lindy hop club.

For those unfamiliar with dance and with my background, I've danced lots of different styles. I'm not bad at standard ballroom (waltz and foxtrot, for example) and I'm good at Latin (samba, cha cha, etc.) – I'm no pro, but I definitely get by. I'm mediocre at swing. Within swing, there are many variants. West coast swing is easily the one I'm best at. Lindy hop is easily the one I'm worst at (of the ones I've tried, which are several). West coast and lindy are similar rhythmically but their styles are worlds apart; west coast swing is smooth and lindy hop is grounded. So when I try to dance lindy hop, my west coast swing kicks in and I do it wrong – very wrong.

Not having gone dancing anywhere west of Salt Lake City – ever – I took a minute to observe what was going on around me. It was easy to see that there were lots of novices who still struggled with things like rhythm and leading. There were several people way more advanced than I. They dance the way some people play soccer or paint: they made something beautiful with the skill they've developed.

I went back and forth between observing from the edges (hoping to learn) and dancing. Everyone I danced with was nice, but some of them were clearly underwhelmed. As they always do when I'm faced with my own incompetence, the gears in my head started turning. Turning isn't the right word – fast enough; these gears were threatening to melt.

I realized that I'd never really gotten into self-expression through dance. After all, I use my words for self-expression. I like words because they can be used precisely. Dance, as is the case with many art forms, can express very effectively from the perspective of the expresser, but it is often ineffective at clearly communicating to observers. There is, of course, nothing wrong with this sort of expression; it's just that I feel no need for it.

Another reason people love swing is its low barrier of entry: relative to other dances, it's easy to show up and learn and have fun without much practice. I've often been frustrated with people who dance swing because they often don't learn the other styles that I love so much. I don't begrudge them swing, but it irks me to see that they are talented but that they don't use that talent for other dances. I feel like they're missing out and I feel like I'm missing out on the chance to dance with them – to really dance with them.

Another factor is that swing's culture is generally one of showing up and learning by experimentation and observation. I've found that I learn better when I'm being instructed precisely. I'd like very much to know where each toe is supposed to point and I learn it better when people just tell me. Such exacting technique certainly exists within the swing world, but many casual swing dancers love swing because they can get away without it.

Tonight, I realized that I enjoy dancing because the way I move is different. Waltz is smooth but surprisingly athletic and the spinning is fun. West coast swing requires control and finesse with some flair. Samba looks like it's all over the place but also requires precise control in every part of the body. I have fun when I dance them because of the challenge of being technically precise and because of the beautiful and distinct feeling that each one affords. I'm sure that the other variants of swing have their own feel – I know that lindy does – but I've never done enough of them or been interested enough in them to experience them in that way. And I don't know if I can really get into swing if I don't find a way to express myself as freely as swing dancers do. It's like I get to a dance hall and I don't know what to say.

Because I approach dance from such a different perspective, it's no small wonder that swing does little for me and that my own favorite dances aren't as widely known as I'd like. It's simply the end result of different motives.