My PC is acting a bit strange, I've been running 8gb RAM on Windows 7 64-bit for almost a year but now Windows task manager and even the BIOS is now reporting I have only 4gb.
Bizarrely, CPU-Z still reports the usual 8gb. I've tried switching the RAM sticks around and determined that they all still work so its the two RAM channels closest to the CPU on the motherboard that do not.
I've had a read through a lot forums over the last couple of days but all the suggestions are only slightly relevant to my case and have not helped anyway.
I have run memtest86 and it came back with no errors.
I have also been upgrading my PC lately so I suspect it could be to do with this. Is it possible if the 250w psu can not supply enough power to the PC it will shut down two of the RAM channels?
Any suggestions however wild, would be welcomed!