I have windows xp on my pc.but once. they had got damaged and i reinstalled windows.that time i did not install any anti virus program.now i have come to know that there are18 viruses on my pc and many of them are critical.most of the viruses are trojan.no anti virus program is installed till now.so i request to suggest an anti virus program and how to get it? i hope i would get your message soon.

Hi,
thank you for posting the issue!
So, here's the questions:
1) Which anti-virus program are you trying to install?
2) What are your PC's specs and model?

Note-please do read and answer carefully, because that is strongly impacting the solution.

Possible solution for you problem right now:
Please do not install any other anti-virus except than Ms Security Essentials.
Please do also enable automatic updates on your PC.

You might have some viruses and malware.

Start your PC and press F8 several times until the boot menu comes up. Then select "Safe Mode with Networking". Now get some or ALL of the FREE programs below.

Download, Install and Run Malwarebytes Anti-Malware:
http://majorgeeks.com/download.php?det=5756
When Installing choose the non-pro version.

Download, Unzip, Install and Run TDSSKiller:
http://majorgeeks.com/Kaspersky_TDSSKiller_d6895.html

Download, Install and Run Super Anti-Spyware:
http://majorgeeks.com/SUPERAntiSpyware_d5116.html

If you have an outdated Anti-virus program then Download, Install and Run Avira Anti-Virus:
http://majorgeeks.com/Avira_AntiVir_Personal_-_FREE_Antivirus_d955.html
Make sure to select ALL of the "threat categories" when you install or configure Avira...

You should be in pretty good shape if you run and install all of these programs.

You have some viruses and malware.

Start your PC and press F8 several times until the boot menu comes up. Then select "Safe Mode with Networking". Now get some or ALL of the FREE programs below.

Download, Install and Run Malwarebytes Anti-Malware:
http://majorgeeks.com/download.php?det=5756
When Installing choose the non-pro version.

Download, Unzip, Install and Run TDSSKiller:
http://majorgeeks.com/Kaspersky_TDSSKiller_d6895.html

Download, Install and Run Super Anti-Spyware:
http://majorgeeks.com/SUPERAntiSpyware_d5116.html

If you have an outdated Anti-virus program then Download, Install and Run Avira Anti-Virus:
http://majorgeeks.com/Avira_AntiVir_Personal_-_FREE_Antivirus_d955.html
Make sure to select ALL of the "threat categories" when you install or configure Avira..

You should be in pretty good shape if you run and install all of these programs..

In Most cases if a screen can display and shows signs that your laptop was loading then shows nothing later many times your windows may be corrupt or damaged so you will need to re-install windows on your laptop....i would recommend windows xp 2 and just after installing please try installing an anti virus immediately before any other program is added and don't forget to update the anti virus first. Please also give more information on what kind of message appears before the screen goes blank.

try to uninstall the anti virus software from your PC then instal the yahoo messengar and install the anti virus back on

open it from the all programs ..or from the program files..and in the settings or preferences check the case for show in tray ..or minimize in tray ...

I would firstly recommend sticking to the well known antivirus programs. Many of the free ones off the net are viruses themselves. I would suggest trying to boot into XP's safe mode and seeing if you can uninstall your latest antivirus program.

The AI prevents your Anti Virus(AV) from installing. The Anti Virus requires that you uninstall the AI before you can install your AV. Have you tried installing other Anti Virus software rather than what you have?

What the AI in your system anyway?

Hello,i have been reading your problem....This is simply because you have too many anti-virus programs running all at once.... I reccomend you remove the other 2 anti-virus software....

thanks for your question,
have a nice day....

When installing a new operating system, all file saved will be deleted. Since you've lost all data, you might as well format the entire drive, and then reinstall the vista inspirat thing. Then, download an Avast! anti virus form avast.com. Download the home version, which is free and scan the computer for any viruses. Delete every last one of the suckers.