thanks for your replies!
To answer 123Runner's questions: I ran the memtest86 from the ubuntu installer CD originally. However, today I made a pure memtest86 boot cd with only memtest on it, and the test passed again with pass = 100% complete and no errors
. (Same result.) My memtest ran for ~ 3 hours I think.
I don't have ? or ! in device manager, I think I have no driver problems. I've downloaded all needed drivers from the manufacturer and installed them correctly. I've already checked this earlier actually but forgot to mention, sorry.
I downloaded the program "Hutil" from samsung's website. This was the only software option for the model "sp1213n", except the ones for enabling/disabling something under windows 2000 (and the manual).
I booted into dos with a boot floppy image and started hutil from dos. However, it seems to me that "Hutil" is an information utility only. I couldn't start any surface check or other thing like this. Hutil's infos seemed ok to me anyway. There were infos only about the model and some dma settings and etc. Nothing diagnostical if you ask me.
There is another samsung utility called shdiag over this http://www.samsung.c...ort_Shdiag.html
link. It doesn't list "sp1213n" as a supported hard drive. However, it says "And other older models" at the end of the supported model's list. My next move would be to start shdiag, but, just in case, do you have any info when shdiag caused harm to a hdd what's model wasn't directly listed in the supported models list? As far as I understand computers, it is 95%-99% sure that it won't cause any harm, but I would like to ask your opinion too.
Anyway, I backed up the important data from the hdd already.
Actually my general idea now is that it is a cpu / cmos battery (not likely) / mobo problem, but I don't understand these devices so much. The system time is always ok so i guess it's not battery related. Is there a way to (mass) test cpu if it can do calculations correctly?
Anyway, just for information. Ubuntu CD has a boot loader what enables you to load whichever OS on the CD or CD image installed on the CD you want. The Ubuntu installer livecd comes with a prebuilt memtest86 image. When you start the memtest86 from the CD, I am sure that ubuntu itself is not loaded at all. I am unsure if the bootloader is doing something significant to the memory test, but i think it's 95% sure that it's not. I think memtest86 from the ubuntu livecd and memtest86 "stand-alone" do the very same thing.
Edited by naxa, 18 January 2009 - 01:40 PM.