Windows XP will not start up and safe mode will not start upby pressing F8? A virus affected my Norton antivirus & windows XP operating system. Can I start using commands in C: prompt? 1 person needs an answerI do too

If you are unable to start the computer in Safe Mode or use Last Known Good Configuration, you can scan the drive by booting with one of the antivirus rescue CDs or pull the drive and scan from a working computer. If the computer is extremely infected, you will probably need to back up your data from outside Windows (see below) and do a clean install/factory restore.Rescue CDs: http://www.avira.com/en/support/support_downloads.html - Avira AntiVir Rescue System (download the .iso)http://www.f-secure.com/en_EMEA/security/security-lab/tools-and-services/rescue-cd/http://www.bitdefender.com/KB627-en--How-to-create-a-BitDefender-Rescue-CD.html (has download link)http://michaelstevenstech.com/cleanxpinstall.html -Clean Install How-To http://www.elephantboycomputers.com/page2.html#Reinstalling_Windows -What you will need on-hand Retrieving data when Windows won't start:1. Pull the drive and put it in a USB drive enclosure or use a USB drive adapter. Attach this to a computer running a working install of XP/Vista/Windows7. Use the working Windows Explorer to copy the data to the rescue system's hard drive and then burn the data to cd or dvd or copy it to an external hard drive. I prefer not to do this if I know the drive is infected because there is a chance of infecting the host system. In these cases, I use #2 below.2. You can boot the target computer with a Bart's PE (XP only) or a Linux Live CD such as Knoppix or Ubuntu and retrieve the data that way. This has the additional advantage of telling you whether the problems you're having are hardware or software-related because if the computer behaves perfectly under Linux you know that Windows (software) is the culprit. Conversely, if the computer misbehaves under Linux you will know that there is a hardware problem. Here is general information on using Knoppix for data retrieval when you can't get into Windows:You will need a computer with two cd drives, one of which is a CD/DVD burner OR a USB thumb drive with enough capacity to hold your data OR an external USB hard drive. Download the Knoppix .iso and create your bootable CD*. If you are doing this in an older operating system (XP or Vista), you'll need third-party burning software like Nero, Roxio, or the freeImgBurn (Windows 7 can burn .isos natively). Burn as an image, not as data. Then boot with the CD you created and the Windows files will be visible in Linux. If you want to burn CD/DVDs, there will be a Linux burning program to use.*If your computer only has one optical drive and you want to use that drive to burn data or need to test the drive, you can create a bootable USB thumb drive running Linux instead of a bootable CD. This website will show you how to do that -http://www.pendrivelinux.com http://www.knoppix.net http://www.nu2.nu/pebuilder/ - Bart's PE BuilderAlso see - http://lifehacker.com/5504531/the-complete-guide-to-saving-your-windows-system-with-a-thumb-drivehttp://www.howtogeek.com/howto/17044/move-files-from-a-failing-pc-with-an-ubuntu-live-cd/https://help.ubuntu.com/community/LiveCDAnd for future disaster recovery strategies - http://www.elephantboycomputers.com/page2.html#Backing_UpMS-MVP - Elephant Boy Computers - Don't Panic!