I've installed a security program on my laptop and it now won't shut down or load. I can log in but the Welcome page keeps loading (for a whole night) and it won't get past that stage. The only way I can turn it off is by taking the battery out. The only way it will open is in SAFE MODE. I've sset the restore point back to before I installed the anti-virus but it is still taking forever to load and won't open to my desktop.