I have an Acer Aspire 5534 and when I turn it on, it comes with the F2 setup then goes to logon then it crashes and says about memory then it goes to a black screen that say start window normally, then it goes back starting windows for log on. It is a Window 7.
Sounds like you may have a bad stick of RAM. Try removing one stick and then starting it. If it does the same thing, remove the other stick and then put the one back in you removed; then try again. Doing this will let you know which stick is bad or if both are bad.