Don
- Joined
- 5 Oct 2008
- Posts
- 8,991
- Location
- Kent
Hi all, a few weeks ago, my computer started behaving strangely, with problems that seemed to be memory related. One such example is that it failed memtest86 (Version 3.5) spectacularly, by restarting the computer during the second test. I initially thought it might have been the motherboard and I sent it back to the company I bought it from. They sent it back. No note of what tests had been done or what with, just sent it back, presumably meaning that it was working?
So I then tried the memory in a different computer, again memtest failed, but on the same PC with it's own memory in it there were no problems. So I RMA'd the memory which OCUK have just checked and replaced and I'm waiting for the new stuff so I know that it was at fault. However I also ordered 8GB of the new Kingston 1066Mhz DDR2 and it arrived yesterday, quickly as promised by OCUK.
The problem is that at 1066Mhz with the voltage altered as recommended by the manufacturers and all 8GB in, the computer becomes very unstable and fails memtest in much the same way as before (rebooting) and fails Windows Memory Diagnostics (alternative to memtest that I found) by freezing. If it is run at 800Mhz all 8GB, it still fails memtest, but the Windows Memory Diagnostics runs without a hitch and the computer seems to be stable. 4GB 1066Mhz also runs fine in WMDiag. Though I've only tested half the memory in this way. It looks like either my motherboard is dodgy after all (BAD Seller) or memtest has a compatability issue. Unfortunately whatever is going on, I cannot use all 8GB of my memory at 1066Mhz.
When I get home from work I'm going to test both sets of memory at 1066Mhz, then i'll be able to see if i've been unlucky with the memory. Otherwise I might have to buy a new mainboard after all
Does anyone have any suggestions about what to do? Or what tests I can try or anyone know of any known compatability issues?
Motherboard is a DFI Lanparty X48 DK X48-T2RS just incase that helps.
So I then tried the memory in a different computer, again memtest failed, but on the same PC with it's own memory in it there were no problems. So I RMA'd the memory which OCUK have just checked and replaced and I'm waiting for the new stuff so I know that it was at fault. However I also ordered 8GB of the new Kingston 1066Mhz DDR2 and it arrived yesterday, quickly as promised by OCUK.
The problem is that at 1066Mhz with the voltage altered as recommended by the manufacturers and all 8GB in, the computer becomes very unstable and fails memtest in much the same way as before (rebooting) and fails Windows Memory Diagnostics (alternative to memtest that I found) by freezing. If it is run at 800Mhz all 8GB, it still fails memtest, but the Windows Memory Diagnostics runs without a hitch and the computer seems to be stable. 4GB 1066Mhz also runs fine in WMDiag. Though I've only tested half the memory in this way. It looks like either my motherboard is dodgy after all (BAD Seller) or memtest has a compatability issue. Unfortunately whatever is going on, I cannot use all 8GB of my memory at 1066Mhz.
When I get home from work I'm going to test both sets of memory at 1066Mhz, then i'll be able to see if i've been unlucky with the memory. Otherwise I might have to buy a new mainboard after all

Does anyone have any suggestions about what to do? Or what tests I can try or anyone know of any known compatability issues?
Motherboard is a DFI Lanparty X48 DK X48-T2RS just incase that helps.