Hi Just got new PC components and put them together. I'm able to boot up OK without problems, everything posts, CPU temp is about 43C room temp is about 33C so it's not over heating... I've got an asus a7v8x with athlon 2400 geforce 4 ti4200, 2 x 256 kingmax ddr pc3200 ram, which is detecting fine in the bios... a WD 120 gb 7200 hdd and a SB audigy 2 I cant seem to install windows XP.. , I set the boot order to CD first, and put in the CD, then it boots up, copies files accross... then says starting windows and then reboots and gives me this error - C0000221 unknown hard error \systemroot\system32\ntdll.dll anyone know what I can do to fix this?? I'm hoping i havent killed anything if you need more info, let me know... i'm also on icq (laptop) 2122648 thanks! *scared*

Here is a site that has an explanation for your problem: http://www.jsifaq.com/SUBJ/tip4800/rh4851.htm If not satisfied with the site, try searching google.com with "C0000221 unknown hard error" in the search field. There are numerous references to the problem.