Saturday, July 5, 2014

Avast! Free Antivirus 9.0.2021

Avast! Free Antivirus is an efficient and comprehensive antivirus program. It is one of the most popular antivirus programs available, thanks to the reliable and trustworthy brand that Avast have created. The key features that continue to make Avast! Free Antivirus so popular are the easy UI, optimized scanning options and continuously updated database of virus definitions.

Simple, improved UI 

 The 2014 version includes a much simpler and quicker to use UI. Key features can be easily reached in the sidebar and the homepage is now customizable so you can access the tools you use most often directly. The overall appearance is clean and uncluttered, with buttons intuitively labelled and positioned.

Comprehensive Protection 

Avast are constantly updating their database of virus definitions, meaning your computer will be protected against the latest spyware, viruses and potentially hazardous websites. Avast’s large and active community quickly alerts the development team of new security threats which are swiftly countered and added to Avast’s significant database. The browser add-on further improves computer security with features like cookie and social tracking blocking.

Speed

Avast! Free Antivirus comes with 5 standard scanning options based on depth and speed. Rapid scan will suffice in most cases - targeting removable media and the files you select, identifying security threats in usually less than a minute. A startup scan will launch automatically on boot up and is a useful, regular security check. The optimized scan engine in the 2014 version means scanning of text content is 10 times faster than previous versions. Scanning of EXE files is around 2 times faster. Improved memory usage means Avast! Free Antivirus should cause less strain on your system so you can continue with other tasks faster.

Summary

Avast! Free Antivirus is definitely one of the best free total security managers available. It is relatively lightweight and efficient, while still providing comprehensive security protection. The browser add on can slow browsing speed and the scanning might not be as detailed as some premium antivirus options. But the simple, effective UI and strong security capabilities make Avast! Free Antivirus a very good choice for those looking for free computer security.

CCleaner 4.15.4725

Probably the most popular freeware cleaner globally with over 1 billion downloads since its launch in 2003. Piriform’s CCleaner is a quick and easy to use program which makes your computer faster, more secure and more reliable. CCleaner removes cookies, temporary files and various other unused data that clogs up your operating system. This frees up valuable hard disk space allowing your system to run faster. Removing this data also protects your anonymity meaning you can browse online more securely. The built in Registry Cleaner fixes errors and broken settings to make your computer more stable. The simple, intuitive UI and rapid but powerful cleaning make CCleaner a favourite among novices and techies alike. Professional, Network, Business and Technician Editions of CCleaner are also available for serious users.

A Faster Computer 

Browsing the internet your computer picks up a whole host of unnecessary files, cookies and history. The same thing happens when you run most programs on your computer – lots of temporary files and settings are saved. CCleaner removes these unused files and settings to free up valuable hard drive space, enabling your system to run faster. The default settings only focus on typical junk files and locations so you’re unlikely to lose important information unless you alter these. A Startup Cleaner also helps you to identify and remove unused programs running in the background when you start your computer. This makes the startup time shorter and puts less strain on your hard drive throughout use.


Less Crashes & System Errors 

If you notice lots of system freezes, error messages and often experience crashes, the chances are your registry become cluttered with unused files and broken settings. CCleaner’s fully featured Registry Cleaner identifies these issues and fixes them. The registry analysis takes seconds and cleaning just a little bit longer. Prompts advise you when to save backups to avoid losing important data. 

More Secure Browsing

Advertisers and websites track your behaviour online with cookies. Saved passwords, cached data and internet histories make your identity less secure. CCleaner removes these files to make your browsing experience confidential, meaning you are less likely to suffer from identity theft and/or online fraud. The military grade Drive Wiper ensures any data you want to be permanently deleted, stays deleted. 

Customisable Cleaning 

CCleaner Tools and Options tabs allow you to customise cleaning options to fit your needs. If you are not a savvy user, you might want to stick with the safe default settings. Advanced users can uninstall unwanted programs, select which cookies to save, customise cleaning settings and setup system monitoring. 

Summary 

 CCleaner has earned its position at the top of the freeware cleaners offering the sort of features premium programs struggle to compete with. The clean, intuitive UI makes it one of the easiest programs to use, but don’t let its size and simplicity fool you. This is a powerful utility for improving your computers performance. Piriform’s regular update process means CCleaner is constantly improving and its popularity will continue to grow.

Tuesday, January 24, 2012

How to reinstall factory OS

In this post I explain how to reinstall factory operating system. This should work for most laptops running Windows Vista or Windows 7 OS.
This could be useful if your OS stopped working properly, got corrupted or infected with a virus.
WARNING! Running system restore utility will erase all personal data on the hard drive and re-image it back to factory defaults. Make sure all personal data is backed up before reinstalling the OS. Also, make sure the laptop is running on AC power during the recovery process.

Sunday, December 25, 2011

How to repair broken touchpad connector on motherboard

In this post I explain how to repair broken touchpad cable connector on a motherboard.
Let’s say you were fixing a laptop yourself and accidentally damaged the touchpad connector or any other similar connector. The problem is the touchpad connector soldered to the motherboard and it’s impossible to replace it with regular soldering tools. Also, these connectors are not sold separately which makes the replacement even more impossible.
Let’s try to repair it. We’ll do it using the same technique as for fixing the keyboard connector.
On the following picture you see a typical touchpad connector. The connector has а white base (permanently attached to the motherboard) and locking tab (moving part).
In order to unlock the connector you lift up the left side of the locking tab. The locking tap opens up at a 90 degree angle and releases the touchpad cable. After that you pull the cable from the connector.


On the following picture you see the damaged connector. I wasn’t careful enough and separated the locking tab from the base.
Unfortunately there is no way to attached broken tab back.

Here’s how I fixed it.
Insert the touchpad cable back into the connector. The touchpad cable has contacts on the bottom side – the side which is facing the motherboard.
In order to work properly the cable contacts have to touch contacts inside the connector but it’s not happening when the locking tab is missing.

Find a small piece of plastic. It has to fit inside the connector and be thick enough to fit tightly between the four metal hinges and touchpad cable.
Insert this piece of plastic into the connector. Make sure the touchpad still seated inside.

On the following picture you see the connector “fixed”. It doesn’t look the same as before but nevertheless the cable secured inside.
The piece of plastic applies pressure on the cable and it makes good connection with the contacts. The touchpad works again!
Now you can secure the connection with tape.
This simple trick fixed my touchpad.

Here’s another type of touchpad connector.
The locking tab is broken and also separated from the base.

Position the broken tab the way it was plugged before but do not push it into the connector yet.

Now insert the cable. In most cases it goes under the tab.
Push the cable all the way into the connector.

While holding the cable, push the tab into the connector.
Even though the locking tab is broken, it should secure the cable.
Again, apply some tape over the connection to secure it.

Thursday, December 8, 2011

Most common hardware problems

In this post I will summarize most common laptop hardware related problems and give some suggestions how to troubleshoot or repair them.
Problem 1.
Computer doesn’t turn on at all.

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:
– The AC adapter failed and the battery has no charge left. In this case test the AC adapter with a voltmeter. If it’s dead, replace it with a new one.
– DC jack failed and the motherboard doesn’t receive any power from the adapter. In this case the DC jack has to be replaced.
– Motherboard failed. The motherboard has to be replaced, if it’s not too expensive. Otherwise get ready to buy a new computer.
Here are some tips for testing AC adapter and DC jack.
Also, make sure to read step-by-step instructions for troubleshooting dead laptops.
Problem 2.
Screen is blank.

The laptop turns on, power LED lights up, 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.
Possible problem:
– This can be memory failure. It’s possible one of the memory modules failed. In this case you can try reseating 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 module installed. You can try replacing memory modules.
– If reseating/replacing memory 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.
Read this guide for bare bone system troubleshooting.
Problem 3.
Laptop turns on and off repeatedly.

The laptop turn on without showing any image on the screen. After a few seconds it turns off by itself. Then it turns on and off again.
Possible problem:
Most likely this is motherboard failure. You can try reseating/replacing memory as I described in the Problem 2. If it doesn’t help, probably the motherboard failed.
Problem 4.
Laptop makes noise while running.

The laptop turns on and everything works fine, except it makes some constant weird grinding or rattling noise.
Possible problem:
In most cases this noise is coming from the cooling fan or hard drive. Take a closer look at the cooling fan.
If the fan doesn’t spin but the the laptop makes noise, probably it’s coming from the hard drive. Back up all personal data as soon as possible and replace the hard drive.
Also, you can remove the hard drive and stat the laptop. If the laptop still makes noise, most likely it’s bad fan.
Problem 5.
Laptop shuts down or freezes.

The laptop runs properly but after a while it freezes or shuts down without any warning. When it happens, the bottom feels hot. Also, the cooling fan runs louder than usual.
Possible problem:
Most likely this is heat related issue. It happens because the fan heat sink is clogged with dust and the processor not cooling down properly. Cleaning the fan and heat sink from dust should fix it.
Here’s how you fix heat related problems.
Problem 6.
Battery not charging properly.

The battery stopped charging properly. It doesn’t charge at all or charges only after you adjust the position of AC adapter plug inside the power connector.
Possible problem:
– Failed battery.  If it doesn’t charge completely try reconnecting the battery first. Also, try running the laptop just from AC adapter with battery removed. If it runs fine from AC adapter, most likely it’s either bad battery or failed motherboard. Try replacing the battery first.
– Failed DC power connector. If the battery charges only after you adjust the position of AC adapter tip inside the connector, most likely this the DC jack failed.
Here are some tips for charging problems.
Problem 7.
Screen light fails.

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 and all you can see is a very faint image.
Possible problem:
Most likely it’s either failed screen inverter or backlight lamp (CCFL) failure.  When either one fail, the backlight stops working.
In order to troubleshoot this, you’ll need some spare parts: either new working inverter or known good backlight lamp.
Read how to troubleshoot backlight failure.
Problem 8.
Strange or garbled image on the screen.

The laptop turns on properly but has a distorted or garbled image on the screen.
Possible problem:
– The graphics card failed. First of all, test your laptop with an external monitor or TV. If you see the same garbled image on the external screen, most likely the graphics card failed.
– If the problem appears only on the laptop screen, this can be related to one of the following: poor connection between the video cable and motherboard or screen. Also can be failed video cable or screen.
Here are examples of failed video and explanations how to narrow down the problem.
Also read why display shows strange colors.
Problem 9.
Some keyboard keys stopped working.

Some keyboard keys do not work at all or type wrong characters.
Possible problem:
Most likely the keyboard failed and they are not repairable. Read how to replace the keyboard.
Problem 10.
Keyboard has missing or broken keys.

A key got separated from the laptop keyboard.
Problem solution:
If a key separated from the keyboard, it’s still possible to fix it.
If you have many keys missing, probably it makes sense to replace the whole keyboard.
Read how to attach a key back .
Problem 11.
Repetitive beep sound on startup.

You turn on the laptop but there is no video on the screen. Instead, it starts making repetitive beeping sound. In some cases you can “fix” the problem temporarily if you press on the keyboard keys.
Problem solution:
Most likely you have stuck keys. In this case you’ll have to replace the keyboard.
Problem 12.
Liquid spill.

You spilled something on the laptop and it’s stopped working.
Problem solution:
Liquid spills are very dangerous and unpredictable. If it happened, turn off the laptop ASAP, remove the battery and do not use it until all internal parts are inspected for liquid damage.
It’s sill possible to make it work again.
Read how to deal with liquid spills.

Wednesday, August 17, 2011

Liquid spill repair tips

In this post I provide a few liquid spill repair tips.
IMPORTANT: If you spilled something on your laptop you should stop using it right away, even if it appears to be running good. Right after the spill you should turn it off, 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.
Liquid spills are very unpredictable. Even a small liquid spill can cause serious damage.
IF YOU SPILLED A SMALL AMOUNT OF LIQUID
Let’s say you spilled less than a teaspoon of liquid on the keyboard and it stopped working properly, but anything else works fine.
In this case it could be enough to remove just the keyboard to evaluate the damage. Turn off the laptop, unplug the AC adapter and remove the battery. Now remove the keyboard and take a closer look underneath.


Search for any liquid presence under the keyboard.

– If you see liquid on the motherboard, you’ll have to disassemble the laptop completely for the further inspection.
– If the motherboard appears to be completely dry, do not disassemble it any further. Replace the keyboard with a new one. Hopefully replacing the keyboard will fix it.
IF YOU SPILLED SUFFICIENT AMOUNT OF LIQUID
If you spilled a lot of liquid on the laptop, turn it off right away. Unplug the power adapter and remove the battery as soon as possible.

Most likely it will be necessary to remove the top cover and inspect the motherboard for the damage evaluation.

Search for any liquid presence on the back side of the top cover and motherboard.

If the motherboard is wet, remove it from the laptop and inspect the other side.

HOW TO CLEAN UP LIQUID DAMAGE
Wipe it out liquid with a soft cloth. Ideally, use an air compressor to dry the motherboard.
Be very careful wiping the motherboard because it has too many small components.
If you find any corrosion, you can clean it up with a toothbrush and 91%-99% isopropyl alcohol.

Make sure the motherboard (or any other internal component) is completely dry before testing it.
IF YOU SPILLED SOME LIQUID ON THE SCREEN
If you spilled liquid on the screen, wipe it out clean as soon as possible. The liquid might get inside the screen and damage it.
In one of the previous post I explained how to clean the screen with liquid damage. Believe me, it’s not easy. But if it happens, just replace the whole screen.
HOW TO ASSEMBLE THE LAPTOP AFTER CLEANING
You’ll have to assemble it back together step by step.
First, assemble just main components: motherboard, CPU with the cooling fan and RAM modules. Now turn it on and test basic image on the screen.
If it turns on and you can see the image, start adding other parts one by one and test after each step.

If the laptop doesn’t start after cleaning, take another look at the motherboard and other components. Maybe you missed a small damaged area. Try cleaning it again.
If it still doesn’t turn on, most likely the motherboard (or other component) is damaged.
HOW TO RECOVER DATA FROM HARD DRIVE
Let’s say the laptop is dead and you cannot do anything to make it work. You still should be able to recover personal data from the hard drive. I assume the hard drive wasn’t damaged by liquid.
You can access data using a USB enclosure.