dosto


main ne window 7 main bitdefender antiviruse install kiya tha install hone ka bad error aya ka win7 per ye verion nahi chal sakta ...main ne ise uninstall ker diya ab main kaspersky antivirus kerna chahta hon lakin jab main install kerta hon to MS Dos ki file open hoti or os ka bad kuch bi nahi hota na setup chalta ha ....please help me