The problems arising at start of any browser can be caused by penetration into the system of virus programs or so-called ""trojans"". Such programs are capable to change system files and settings that leads to incorrect operation of both browsers, and the operating system.
Malicious software (viruses, trojans, etc.)
Programs of such view get into a system due to the lack of high-quality antivirus protection or by mistake of the user. For ""treatment"" of a system it is necessary to write on the USB media or CD/a DVD disk the antivirus software and to start it on the infected computer. Start of the antivirus software is recommended to be carried out in a safe operation mode of Windows. For this purpose at reset of the computer key F8. If there is a menu of the choice of the device of loading (Boot Device), select the hard drive on which the operating system is installed, click Enter and once again F8.
In the appeared list select, using arrows on the keyboard, "The safe mode (Safe Mode)" and click Enter. The system will be loaded in the safe mode, after that connect the media with the antivirus software and start it. When scanning a system specify for check all local disks since the virus program can copy itself in different folders on the computer. After the end of scanning of a system follow indications of the antivirus software regarding further actions with the found malicious applications.
The changed hosts file
Some malicious applications are capable to change files of the operating system. The hosts file as he is responsible for network connection is most often subject to change. Using the Internet, define contents of the "healthy" host file. To find the hosts file, open a local disk on which the operating system is installed (""With"" by default), further pass on the following path: Windows-System32-drivers. Open the hosts file by means of the Notepad program. Check the contained information in the file, it should be corresponding "healthy" a host file. All wrong lines should be deleted. After that save changes and close the file.
Verification of the register
For verification of the register it is necessary to start the command line, having keyed Win+R or having selected in the Start menu - Standartnye-Vypolnit. In the appeared window enter regedit and click Enter. In the opened window take place: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows\
Select a line of AppInit_DLLs and click Ctrl+X. Save changes and close a register window. Open "Notepad" and click Ctrl+V. Save the turned-out text file and reboot. After start of the computer open the created text file and take place specified in it, delete this file.