He might try this little tool. Since he already boots to safe mode, use it to try to boot back into normal mode. It might break the cycle that is causing him to always boot in safe mode. It doesn't install anything. You just click it and pick what you want to do.http://www.superadblocker.com/bootsafe.html
I use it because my computer is a pain to boot into safe mode. My fingers aren't fast enough to do it manually. It's been a godsend for me.
The reason I say it "might" break the cycle he's in is because of the last statement here on their site:
When you have completed your tasks, simply run BootSafe again and select the Normal Restart option and click the Reboot button and your computer will reboot in Normal Mode.
People who have used this tool to get into Safe Mode have found that if they forget and restart the normal way, they just cycle back into Safe Mode again.