Tested the memory again, with all 4 sticks in it gave 14 errors in just 1 minute.
I took 2 out and the test ran fine for 14 passes with no errors.
Then I put the other 2 in and again no errors.
I only have errors when I have all 4 sticks in the computer.
Btw: 1 of the 4 sticks hasnt got chips on both sides. Just 1. Also, I can't use this stick to run the pc in Dual-Channel mode. Theyre all kingston ddr2 800 though. I think I'll replace the stick anyway to get Dual-Channel mode (for my pc its called ganged or unganged mode).
I think the memory sticks dont like the fourth one. I remember buying it but I asked for exactly the same memory as I bought before. Maybe Kingston makes it differently now?
Looking forward to your reply,