Slow start up after spill
I am trying to fix a friend's 2007 Macbook. Her kids spilled something on it a while back, and now the startup is extremely slow, and it will not startup at all if it is not plugged in to the power adapter. When I attempt to boot it up, it starts to the grey apple screen, which then turns blue. At that point it hangs anywhere from 5-15 minutes, before it goes to the login screen. I've replaced the hard drive, and tried a clean install of the OS and restoring from a time machine backup and from the old drive, all give the same result. Once it starts up, it works fine, and all the keys and trackpad are fully responsive. I've run the Apple hardware test, and seen no errors.
I'm wondering if there's some sort of a keyboard fault that the OS is working around in that hang time that points to a bad keyboard assembly. I haven't tried booting into verbose mode yet, because I'm not really sure what I should be looking for error wise.
Is this a good question?