Windows 7: still having problems with startup

hi everyone... i was reading the post of this guy who had a similar problem as mine (thereaperwaits)...he quotes: "The computer reboots itself every time it gets to the windows logo, and upon restart I get the windows has failed to start' message, which it then asks me to repair... " after reinstalling the ]OS everything was fixed.... so the deference with my case is that after rebooting windows asks me to repair and so i do in both ways u did recommend ( OS DVD and startup option)... the result ... nothing got fixed ... so i was using the windows seven trial version and it was working perfectly.... now im using windows seven ultimate x64 evaluation copy and im having this annoying problem.... i did reinstall the OS and i keep getting the same situation... can anyone help me?... by the way i already asked microsoft and the just answered that maybe i got to contact the computer brand support for compatibility issues... :S

Please fill out System Specs it may help in diagnosing problems

It could be failing hard drive,Hardware(IRQ) conflict,Driver Issue.....

You can download Windows 7 Upgrade advisor to be sure your system is compatible:
http://www.microsoft.com/downloads/d...1-2497c146af15

thanks for the advice..but i did run the software and my laptop is 100% compatible... so still this should be again a windows problem....even though...could i install again the test version which worked perfectly, with an old serial number?...cause it seems like nobody can find the way to fix the issue with 7 RC... thanks.