i have an xps 400 that was working fine,shut down a couple days ago ,now it won't start up.On start-up it goes thru dell logo screen then screen with blue bar on top"recovery section" ,then to another black screen that says windows was unabe to start due to a software probem,it states, load needed DLLs for kernal, please contact your support person ,and thats all it doe's.I have tryed to repair from system disk but it wont boot ,just stays idle,i have tryed to change the boot menu,but it wont go there either,and i have been doing that the correct way as ive done it many times on this and other pc's,do any of you guys know whats up? I am shur the keyboard is ok because if i hit any key on it it starts the whole log on over again,and i amgetting lights at cd drives and hhd,but im not getting any beep or diagnostic lite with a code, please help!