As some have already sugested, i would try to format and start over. It doesnt really take that much time....in overall about 2 hours maybe? ( counting with drivers/programs instalation ). You are probably wasting time trying to fix what it SEEMS to be unfixable in that OS.
I dont know what do you use your PC besides LFS, but i can assure you that some files/drivers unrelated to either LFS or your wheel can cause that kind of problems, and if you cant spot them to delete them, format is your best chance.
Just go ahead man, get some food, turn the TV on, and get it going. If after that it still doesnt work, then you can defenitly rule out OS problems and start searching for hardware problems.
Anyways, these are my 2 cents, just trying to help.