Hello there,I have this problem. My user account got corrupted. I could not log into my account, so used administrator's. When looked into Event viewer, I saw these ID's 1500 and 1508. 1508:Windows was unable to load the registry. This is often caused by insufficient memory or insufficient security rights. DETAIL - Insufficient system resources exist to complete the requested service. for C:\Documents and Settings\sandra\ntuser.dat 1500:Windows cannot log you on because your profile cannot be loaded. Check that you are connected to the network, or that your network is functioning correctly. If this problem persists, contact your network administrator. DETAIL - Insufficient system resources exist to complete the requested service. I assumed it has something to do with a virus, so performed a full system scan in Safe Mode. It found nothing.I did full scan disc, no errors found either. i googled the problem but did not find any precise answer.I created new user profile and copied old data and, therefor, "fixed" it. Also installed UPHClean. I did all that but never found the cause. Can you please help me?

Hi,This error is caused when the user profile is corrupted. The causes of user profile corruption can be· Power interrupted during logon / logoff· Registry corruption via bad application installs / uninstall,· Virus, spyware, network dropout· During logon / logoff (roaming profiles),· Server issues (roaming profiles),· Someone accidentally deleted a file.DianaMicrosoft Answers Support EngineerVisit our Microsoft Answers Feedback Forum and let us know what you think.If this post helps to resolve your issue, please click the "Mark as Answer" or "Helpful" button at the top of this message. By marking a post as Answered, or Helpful you help others find the answer faster.