Mod Edit: Split from http://www.bleepingcomputer.com/forums/t/513138/unable-to-logon-a-problem-is-preventingchecking-license/ - Hamluis.
I have the same problem, and since the proposed fix is shown, thought I would continue the question [since fix cannot be done].
Have been using XP SP2 and installed SP3 several weeks ago. All was working great, therefore I backed up my work via Ghost....several times. I did have a problem though that prompted me to restore back to an earlier restore point, several times and different restore points and all worked fine.
The last time though I thought the problem I was having might be due to SP3, so I restored to a restore point that was created before I installed SP3. When the computer rebooted, I received the error code above 0x8007007e Warning states that the license cannot be verified. I do have the license on the shiny mirrored sticker that is on the box for the original disk. I can get to the user log in screen [I am the only one who has used this computer since it was new and I have the discs that came with it new] and after logging in, it shows the error code and shuts down. I cannot get into the computer to even attempt to fix by the suggested fix.
I really like my old clogger [have a new Macbook Pro but prefer the old MS]. I need help to solve....please. [If this should be posted new...let me know and I can do that.]
Edited by hamluis, 25 October 2015 - 10:41 AM.