Ok, here is a solution for the problem that annoys you so far. I thought to write this post because I personally suffered from that. And I thought for a while I will never buy expensive laptops again.
So here are the symptoms I experienced during screen flicking period. This screen flickering happens 5 months after I bought the laptop. It is very random and sometimes screen flickers so that you 2-3 times a minute and sometimes few times for an hour. Screen becomes black/vertical lines as it flickers. And I noticed that it gets worse when it is on battery power.
I was able to figure out this as not related to software/driver issue. So it is basically a hardware problem that caused it.
This is how I solved it.
1. Unplug A/C power
2. Remove the battery
3. Remove back cover carefully (cases which cover hard drive and processor).
4. Now you can see processor (CPU), rams and graphic card (GPU).
5. Blow away all the dust in chips and then in cooling units of cpu and gpu using a blower. (never touch chips, soldering with your hand)
6. Adjust cables which have hinges and connectors just to verify them successfully connected.
7. Now replace the covers and you're done.
Tuesday, February 22, 2011
Friday, February 11, 2011
Wednesday, July 15, 2009
How to prevent your computer from virus
1. Install a good antivirus and internet security software.
2. Disable autorun feature in windows (for removable media). Virus commonly use autorun.inf to initiate infect to your computer. So it is recommended to desable this feature by means of a software or editing windows registry. (Please back up your registry before editing it if you are not famaliar with it.) Type regedit in run to open registry editor.
3. Start using Linux as dual boot (windows and Linux in one computer). Only a few viruses are there and that too does not work in latest Linux editions and you can manually delete virus when you are in Linux. (You can also use Linux live CD if you do not wish to have linux installed on your PC)
4. Update your Operating system for security updates. The OS company generally releases security patches regulary and these patches will really protect you.
5. Use strong passwords for your user accounts and try to work in limited account mode(virus cannot always start in these accounts, they need administrator account)
Eg: Do not use this kind of passwords; hackers already know them
explorer, exchange, customer, nobody, codeword, codename, changeme, security, secure,public, office, supervisor, superuser, secret, computer, nothing, nopassword,nopass, love123, boss123, work123, home123, mypc123, temp123, test123, qwe123, abc123, pass123
6. Avoid using any softwares from some piracy sites or free sites or file sharing sites. The softs on these sites are generally coming with viruses attached to them.
7. Use Firefox for browsing, it is safer, faster than IE.
2. Disable autorun feature in windows (for removable media). Virus commonly use autorun.inf to initiate infect to your computer. So it is recommended to desable this feature by means of a software or editing windows registry. (Please back up your registry before editing it if you are not famaliar with it.) Type regedit in run to open registry editor.
To Modify these Registry Settings, Use Regedit and navigate to the following Key:
The default value for the setting is 95 0 0 0. Change the first two digits to 91. Restart the computer to make the new setting take effect.HKEY_CURRENT_USER
-> Software
-> Microsoft
-> Windows
-> CurrentVersion
-> Policies
-> Explorer
"NoDriveTypeAutoRun"
3. Start using Linux as dual boot (windows and Linux in one computer). Only a few viruses are there and that too does not work in latest Linux editions and you can manually delete virus when you are in Linux. (You can also use Linux live CD if you do not wish to have linux installed on your PC)
4. Update your Operating system for security updates. The OS company generally releases security patches regulary and these patches will really protect you.
5. Use strong passwords for your user accounts and try to work in limited account mode(virus cannot always start in these accounts, they need administrator account)
Eg: Do not use this kind of passwords; hackers already know them
explorer, exchange, customer, nobody, codeword, codename, changeme, security, secure,public, office, supervisor, superuser, secret, computer, nothing, nopassword,nopass, love123, boss123, work123, home123, mypc123, temp123, test123, qwe123, abc123, pass123
6. Avoid using any softwares from some piracy sites or free sites or file sharing sites. The softs on these sites are generally coming with viruses attached to them.
7. Use Firefox for browsing, it is safer, faster than IE.
Wednesday, July 8, 2009
New operating system from google (Google Chrome OS)
According to Google blog, "Google Chrome OS is an open source, lightweight operating system that will initially be targeted at netbooks. Later this year we will open-source its code, and netbooks running Google Chrome OS will be available for consumers in the second half of 2010. Because we're already talking to partners about the project, and we'll soon be working with the open source community, we wanted to share our vision now so everyone understands what we are trying to achieve.
Speed, simplicity and security are the key aspects of Google Chrome OS. We're designing the OS to be fast and lightweight, to start up and get you onto the web in a few seconds. The user interface is minimal to stay out of your way, and most of the user experience takes place on the web. And as we did for the Google Chrome browser, we are going back to the basics and completely redesigning the underlying security architecture of the OS so that users don't have to deal with viruses, malware and security updates. It should just work."
Speed, simplicity and security are the key aspects of Google Chrome OS. We're designing the OS to be fast and lightweight, to start up and get you onto the web in a few seconds. The user interface is minimal to stay out of your way, and most of the user experience takes place on the web. And as we did for the Google Chrome browser, we are going back to the basics and completely redesigning the underlying security architecture of the OS so that users don't have to deal with viruses, malware and security updates. It should just work."
Google is unlikely to charge for Chrome OS. The company wants you to get online fast, have a whale of a time... and use as many Google services as you can: from search to email, social networking to photo sharing, word processing, to watching films on YouTube. It is yet another incarnation of the company's "Google everywhere" strategy.
According to my experience, there is no exception for searches and mail other than Google, but Google Chrome the web browser is not popular and few people knows about there is application like Google Doc. And I hope new kind of OS will be here in the near future and hope it would be genius like mail and search.
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