Kernel panic then 3 beeps, replaced RAM, same thing happens

[Pandakopanda]

Last week when I turned on my Mac mini, I got a kernel panic and when I tried to turn it on again, I got three beeps and then nothing. I took it to an Apple dealer. They replaced the RAM and my system booted again.

I took it home and plugged it in, expecting that it would boot up normally like it did in the store. But instead, it started to boot up in (what seemed like) safe boot but after the gray bar was filled up about a quarter, it stopped. So I tried to boot it up in recovery mode, but then again I got a kernel panic and now I only get the three beeps again.

I'm afraid the motherboard is nuking the RAM modules or something like that ... is that possible? They were new RAM modules, I paid 85 EUR for them

Any ideas?

 

[AppleNewton]

appears you have a bad disk.
that loading bar could also indicate not just a safe boot but EFI boot, its trying to find the OS loaders/kernels/etc hence one of the reasons for the kernel panics.

If you have an external drive you can put an OS on I would back up as much stuff as you can and get the drive replaced asap.

 

[pastrychef]

The three beeps indicates bad RAM. I think that happens before even trying to read any disk.

I would bring the Mac Mini back to the Apple dealer as soon as possible since the RAM you paid for should still be under warranty.