Make sure all your RAM is the same speed setup (1066MHZ) and that your RAM can handle the OCd proc (proper timings). You probably may have hurt your Vista install and may have mad it unstable too.. Try system restore and then put in all your ram back.

you cannot add more than 2 gigs untill you have vista fully updated with SP1. There are a couple of updates that needed to be installed to enable the use of more than 2 gigs but they are rolled up into sp1

Thanks for your response.
I tried a reinstall of Vista (32bit) with the memory all in the machine (all 4gb`s)and once Vista was installed the errors started appearing again. Only after removing two of the ram sticks did it stop (from slots 3 and 4)

I have since reinstalled Vista again and I`ll have a play later and if it still seems stable I will put the two ram sticks back in and see what happens.

I think the memory is at fault but unsure why it suddenly just happened after I changed the multiplier to 10 instead of 9. Hopefully it isn`t the mobo but I didn`t change the FSb frequency and doubt upping the multiplier would cause the mobo to through a wobbly.

Try just using the faulty RAM on slots 1 and 2 and boot up Vista. If that works then you can gradually put in the other 2 sticks (1 at a time).

 

Make sure your BIOS settings are at default too.

True however I dont think it would be generating those errors. It would just simply not display the full amount of ram right?

normally it will not even boot but blue screen..

 

Cheers guys,

Strangely I simply just reinstalled the extra 2GB of memory and so far everything has been fine. I even switched back to using Vista where the errors were occuring no longer occurs in that instance of Vista either.

 

So to summarise:

I was running Vista that had been installed since about October last year. I replaced my memory and processor and for 2 -3 days everything was fine. I think overlocked the qx6850 to 3.33 and straight away applications started crashing, services died and even trying to open a file caused an error. A blue screen occured related to memory management.

After this I changed the processor back to 3.0 and the errors still occured.

I installed Vista again and once installed the errors started occuring.

I took the drive with Vista on it out of the machine.

I then installed Vista again on another drive and the errors still occured once Vista was up and running.

I took out 2GB of memory and everything was fine.

I installed the memory back in again and everything was fine.

I put the other drive back in again and everything was fine.

 

Bear in mind at many stages I did a cold boot but it seems somehow the bios didn`t like the overclock I tried and set something wrongly. I even returned the bios to default values but that didn`t work. Only thing to sort this out was to remove 2GB of memory, use the machine and install the memory again.

 

I don`t think I`ll bother trying the OC again!

The problems that you seem to have been experiencing was narrowed down to the memory as you mentioned. It is quite possible, since you removed and reinstalled the memory, that the original memory install into the memory slots could have been the problem. It is possible to install memory and the connections in the slot not be made up and the memory will not operate properly. Removing the modules and reinserting them could make the connections and allow the memory to work properly. I have experienced this before. I also have purchased new memory and it be defective when I got it so whenever I install memory, whether new or used, I always run memtest on the memory to verify it is as it should be. This has saved me many hours of frustration. Hope this helps.

Hi,

I will try memtest in case there is a problem with the memory.

I don`t think it is the memory or the installation of the memory. It worked fine for 2, nearly 3 days before I upped the CPU multipler. Only then did the problem occur, immediately after rebooting after the multiplier change. It`s as if the bios/cmos settings or something got itself into a strange straight after I changed the multiplier which only corrected itself after I removed and then reinstalled the memory.

 

I might try changing the multiplier again to see if the same thing occurs. 

Try also just using the 2 faulty memories and boot up. If it works then you know those are good.

 

Memtest can be performed in Vista by hitting the F8 button when starting up. There should be a Windows Diagnostic option you can do.