Closed XP c-000021a and 0x0000135 error. Tags: Windows XP Last response: January 27, 2012 8:37 PM in Windows XP Share ozrock December 24, 2011 12:21:33 AM Hello, On a system working for ages. Had the reboot going on for days. Unattached and reseated everything and now only have main HD in system and a video card. Finally found 'Disable reboot' but when I did I got the blue screen and c-000021a and 0x0000135 error. Can't get into Safe mode, stops at mup.sys. I have even changed mup.sys with a new one when I attached it to another box. I have also usd the XP CD and done the R- chkdsk. It fixed one or more so it said. It still boots into the XP splash screen and the little blue dots go along for quite a while, then it goes black. I have looked around but am a little confused with some of the answers. Is there a definitive one instead of having to reinstall? Thank you and Merry Christmas and Happy New Year. oz More about : 000021a 0x0000135 error Best solution RealBeast December 24, 2011 6:29:10 PM I would try a repair install, described HERE, since that will save all your programs and just replace system files. You will need to reapply updates. ozrock December 30, 2011 11:51:14 PM Best answer selected by ozrock. Related resources Hi... Help Pleasec00021a status of 0x0000135 - Forum XP won't boot after running a repair. c000021a fatal error - Forum Stop c000021a fatal system error windows xp - Forum Windows XP error c000021a - Forum Stop: c000021a (fatal) error what is this - Forum Can't find your answer ? Ask ! Get the answer ozrock December 30, 2011 11:52:50 PM Thanks.. Finally found it was a faulty new RAM so did the norma; setup and we are all go.. Thanks... SR-71 Blackbird January 27, 2012 8:37:57 PM This topic has been closed by Area51reopened Can't find your answer ? Ask ! Publish Related resources: ForumThinkpad T41 error c000021a ForumC000021a Fatal Error Causes Forumc000021a fatal error ForumSTOP error c000021a ForumBsod error code c000021a ForumBsod error code c000021a ForumHELP!!! Windows XP BSOD at startup! Need help!! ForumStop error when trying to boot in Windows XP ForumHELP!!! Please with Windows XP More resources Read discussions in other Windows XP categories Configuration Customization Drivers Security Video !