jerenus

i have download the lots of copies of few latest version of longhorn, i tried to install the longhorn 4074, it says there is an error while copying files so i overburned it to 700mb cd, then when i tried to install it computer boots up, then it says it couldn't load up the file "boot\system32\ntoskrnl" i have tried lots of times but no chance please anyone help me!! *sorry for my bad english*