and i've tried almost everything i even deleted all the partitions on my hard drive and created new partitions instead and installed a new windows copy! taking in consideration that i tried installing some tools or antivirus softwares but this "trojan" i think is blocking them of being installed or blocking them from working!!! any one pls?

I think you need to try some best antivirus.You can get a good protection of free antivirus programs that are decent choice for average users. However, you will receive a high score protection and better performance of antivirus and security software for non-free antivirus programs.

AV-Comparatives is an independent, nonprofit that provides an unbiased comparison and laboratory testing of antivirus software products and programs. Make it the best antivirus reports available to the public for those who want to learn more. Use a classification system of 3 levels of + Standard, Advanced and Advanced. AV-Comparatives rated BitDefender Antivirus Pro 2011, and advanced in the classification system of 3 levels. He held the Panda Antivirus Pro 2011 also in this level. TrustPort Total Protection 2012 was awarded an advanced level. However, think Kaspersy above gives advanced BitDefender Kaspersky Antivirus Pro 2011 and Panda Antivirus Pro 2011 and awarded and Advanced +. Some of the best antivirus factors included the installation, management

Top Ten Reviews also ranked among the top ten antivirus software best antivirus. They did tests and reviews in the top ten antivirus software for the elimination of tests, tests of PUA, retrospective evaluations, mobile security, false alarms and testing testing and more. They think that BitDefender Antivirus Pro 2011 took place at number one. Kaspersky came in at number two and made no mention of Panda Antivirus Pro 2011, or total protection 2012 Trustport top ten antivirus software best antivirus.

Top Ten levels using many of the best antivirus scans. Including comprehensive web shield, certifications, real-time detection, protection technology, excluded files, access scanning, network security, blacklisting, virus signatures, USB auto detect, updated virus definitions mean time, protection spam, demand scanner, scripts, cookies, white lists, scanning capabilities, protection of the boot record, share P2P/File protection, keyloggers, protection of incoming email, IM protection, protection of outgoing mail
vulnerabilities, Activex, manual scan, adware, identity theft protection, operating system exploits, malware, rootkit protection, spyware detection, threats, dialers, backdoor, phishing and availability of discount coupons. We believe that your anti-virus tests are powerful, effective, comprehensive and well designed.

Our last, best antivirus review was to PC Magazine. PC Magazine had something different from previous results. They think that AVG Free Anti-Virus 2012 was the best antivirus software program. It is also incredibly FREE. This free product performed better than commercial competition.

It is said that total protection 2012 Trustport perform well, but he did a poor cleaning of malware detected and the default action for real-time protection only blocks access to malicious files. They think that BitDefender Antivirus Plus 2012 is good, but did not fare so well in the hands-on and blocking malware removal tests. Furthermore, it was a very large facility. Search support is also limited. PC Magazine also reviewed Panda Antivirus Pro 2012. I also think it is a good program, but still not as good as the free movement of AVG Free Anti-Virus 2012. It was found that the program was not thoroughly clean the malware found. They saw some rootkits continues to work after the deletion. His protection was well the new malware and firewall blocks some exploits