Mac start normal boot after safe boot only.

Hello. My mac is about 3 1/5 years old now. Recently, my username crashed. In other words, my mac works on my brother's user name and then guest's as well but doesn't work in mine. It froze when loading. I took it to the mac support but then he created a new user with my name and then copied all my files to that one but he left the way it is. Now, everytime I start it, apple gray screen turns into a prohibitoy logo. So I do a safe boot and then it goes to a login screen. I then press restart button (with out the safe boot) then only my mac starts normally. The thing is I have to do this every time when I start my computer. Every time my computer boots twice.
So is there a way to fix this? I have reset the Ram but no avail. I don't want to erase and fix it. May be there is some issue with the old user. If I can fix that I might fix my computer but it's still a blind guess.
Please give me some opinions.
Regards,
Asutosh Ghatani
P.S. I also have installed a boot camp

Hello. My mac is about 3 1/5 years old now. Recently, my username crashed. In other words, my mac works on my brother's user name and then guest's as well but doesn't work in mine. It froze when loading. I took it to the mac support but then he created a new user with my name and then copied all my files to that one but he left the way it is. Now, everytime I start it, apple gray screen turns into a prohibitoy logo. So I do a safe boot and then it goes to a login screen. I then press restart button (with out the safe boot) then only my mac starts normally. The thing is I have to do this every time when I start my computer. Every time my computer boots twice.
So is there a way to fix this? I have reset the Ram but no avail. I don't want to erase and fix it. May be there is some issue with the old user. If I can fix that I might fix my computer but it's still a blind guess.
Please give me some opinions.
Regards,
Asutosh Ghatani
P.S. I also have installed a boot camp

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    I rebuilt OS without bootcamp from backed up image (Lion) then upgraded to Mountain lion, no problem at all. Used it for a couple of days, then installed bootcamp and restored the Windows 7 image from the backup. It's completed without any problem. It can boot up in Windows 7 and I changed startup disc in control panel to Mac HD, it can only boot from the recovery disc. Holding down the option key will show the 3 hard discs: Macintosh HD, Windows and Recovery 10.8, but selecting Mac HD always boots up by recovery disc. I have use disk utility from recovery disc to verify and repair Macintosh HD to no avail.
    If I use only mountain lion, it will be OK.
    Has anyone experience the same problem? Thank you.

    http://www.youtube.com/watch?v=QaDMbmsRqkQ

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