My A1200 freezes all the time

[lionstorm]

Hi Walkero,
most freezes/instability for A1200PPC+BVPPC are usually due to overheating of the ppc card but it may not be your case since it was working fine before.
Could also be a library problem (68040.library and 68060.library).
Could also be you did not plug the 3.1 rom to the bottom.
Could be you are using a outdated version of setpatch or installer.
Have a look on internet about OS3.9 FAQ from greg donner (was it dorner?). I am sure you will find a lot more info than I listed here.
Lio

Edit : I dig the address for you : http://www.gregdonner.org/   

[lionstorm]

Well there is a kind of contradiction with overheating :
what I read a little bit everywhere is that the contact between the blizzardPPC and the BVPPC needs to get warm to work properly so you will not see a freeze right from the start. But if it becomes too warm, you will experience sudden lockups and freezes with no apparent reason... except overheating. Be sure to have a fan on the BVPPC as well, not only on the BlizzardPPC.
Lio

And bear in mind that an open case is a very bad idea, ventilators are here to extract hot air out of the tower, so if the tower is open, they dont do their jobs and you still can get overheating problems, even more.