F7 crash investigation

[Marcel Janssen]

Hi,

I installed yet another box with F7 but this new box has got a major issue, F7 
keeps crashing on it while windows works well on it.

Crashes occur about every 10-20 minutes and need a hard reset. They seem to 
occur at random, sometimes while booting sometimes just by looking at the 
screen...

I have slowed down memory and cpu freqs (was not overclocked) to see if that 
changes things, but it didn't.

Where do I start investigating this issue ?

regards,
Marcel