Hello, What could be amiss with my 2010 MacBook? I can switch it on in restore mode but not safe mood. Initially it was behaving very slowly and crashed weekly. I kept restoring it from a backup and it would work fine for approximately one week. Then, when I restored it from a backup that was known to be good some of the programmes didn't transfer. Ultimately the restore start up didn't work. I took the MacBook to the local retailer where they installed Lion OS X 10.7. It worked perfectly--like a new computer--for a few days but not it won't go beyond the loading screen when I switch it on, neither does the safe mode work. Any thoughts as to what might be the problem?