I just tried to install ubuntu using wubi (12.04.01). I restarted and I got that "no wubildr" stuff and then black screen and nothing happens. Please help!!!
After "no wubildr error" wait for a minute it will boot up. To fix that just copy wubildr files directly to c:/.
If this doesn't work try this: go to
Next step is to past all of the content to System Reserved. You can easly access it from Ubuntu, but from Windows you can use this Open Hidden System Drive: http://www.coderforlife.com/projects/win7boot/extras/#OpenHiddenSystemDrive (Tried it myself, works)
Then just paste copied content from winboot and restart your PC.
The "no wubildr" error should be gone.