Mac mini stuck on white screen with logo during startup

Hi,
For the past couple of days my mac mini has been stuck during startup. It plays the startup chime, loads the white screen then the logo appears and it freezes there.
The RAMs were upgraded a few days ago, but it worked fine for a while after that.
Nothing is connected to the mac mini except the monitor, wireless keyboard and mouse. I have tried removing the power cord from the wall for some time, but it is still refusing to start up. I have also tried cmnd+options+p+r to reset the PRAM but nothing changed, I'm not even sure if this applies when startup isn't complete.
Please help.

Mac OS X: Gray screen appears during startup
When it says boot using install disk you can, if you have Lion or later, boot using Recovery:
OS X: About OS X Recovery
What model MIni?

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We need to get you moved. This forum is for mini-tower Macs built between 1998 and 2005 and doesn;t get as much traffic ("eyeballs on the problem") as the forums for newer Macs.
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Message was edited by: burakbey

HI,
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Mac stuck on white screen with apple logo at startup

It's a few days i have this issue.
When i turn on my macmini (late 2009) it does the startup sound, but when the white screen with apple logo appears it stucks on that screen.
To solve this problem i have to unplug the power connector, when i restart it works normally.
This happens randomly, not at every startup.
I switched from normal HD to ssd HD (brand new one), i have the same problem with both HDs.
Since black outs are not good for computers i woult solve this problem.
Does anybody have my same issue or know what's wrong?
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Hello, tough to tell what it might br.
Have you done a PRAM reset, CMD+Option+p+r...
http://support.apple.com/kb/HT1379
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Intel-based Macs: Resetting the System Management Controller (SMC)...
http://support.apple.com/kb/HT3964

Mac mini stuck on white screen with logo during startup

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