Hi all... I appealed to you because I have not found a solution. My config: P4/3.2Ghz/2M.Ram & XP/sp3 This configuration works wonder fully since 1997. First of all, I must tell you the story... Surroundings 15 days ago around 17:00 I extinguished the PC. Icome to 23h00 and turn on the PC for watching a movie. And big surprise : Error 'c000021a' at startup. After looking at a friends, I found solutions. Reinstall XP not question, almost 20 years of config It's a hell to reinstall all programs and various things. The remust be a manual solution. There fore solution to the barbarian. With an another P4 and same config : XP/sp3, I copy the altered files. With a boot 'liveCD' I delivered all this in place, and miracle, I picked up the hand on my machine. ------------------------------------- After : A test of discs: OK A test of the registry:OK Everything work again well except one thing: Internet... The server 'DNS 'work salmost well. The 'DHCP' works very well. My connection works very well and this just a Windows XP problem. My LAN works fine behind the XP firewall. I use times the 'TOR' network, it works very well. On the other hand, the 'normal' internet access no longer works. (IExplorer, Firefox, Opera) nothing works. Unable to connect a page.) I must have missing files or altered, but I nolonger know what to do, and most importantly, I do not want crach my XP and lose everything. I am currently on a PIII/866 plugged in to the 'Box' and everything works well. ( Network and Internet) this is not a problem of ''BOX' It is with him thatI just signed up ont his forum and posted this message. ----------- Could you direct me to a solution? What would be the appropriate files? Miss you there are things in the registry database? Would it be a DNS (windows) problem? ----------- Thank you in advance on this day just sunny.