Interesting problem happened. 2 of the RAM slots on my main cruncher stopped working. Did all the troubleshooting (single stick, replacement sticks, reseat, windows & bios updates, CPU reseat) and it seems to be in the motherboard. It refuses to post (3 beep error) with those two memory slots filled now. Will have to get a replacement motherboard at some point. Until then I am relegated to 16gb instead of 32gb. It's nice to have more during some heavy gaming and video editing. Crunching it doesn't seem to make much difference either way.

Win7 Pro 64. I just graded to the latest AMD package less than a week ago. Something tells me it’s the latest update. Didn’t have this issue prior to the update. Think I’ll go back to previous software.

Element6 and SD Surfer, this fun exchange between the two of you last month inspired me to get an older system back up and running. I had a system with an Intel i5-3570 from about nine years ago that I suspected the power supply had died a couple of years ago paired with a GeForce GTX 750 Ti from about six years ago. A few days ago I ordered a replacement power supply and installed it last night and rebuilt the OS. In the first 10 hours, it has returned ~40 OPNG tasks and ~13 OPN1 tasks which I was pretty pleased with. I'm not sure how long I will keep it in action as it's efficiency isn't too great - it idles at about 36 watts, draws 81 watts under full CPU load with the CPU maximum processor state set to 99% percent, and draws about 120-125 watts with the GPU under load. But sure was fun to get some older hardware working again!

I have retired more machines than I care to think about. However, just about everything I have has had on board graphics. I usually retire them when I don't think the energy they use for the amount of work they do is worth it anymore. Once in a while I will fire one up just for old time's sake and let it crunch for a couple of days. Once the OPN project is done I will send a couple more out to pasture.
Cheers

Is there any reason given for the invalid ? When you check the work unit, do others complete it successfully ? Does it make any difference in the outcome based on the total load of the machine ? I am fishing for any patterns which may show up.
Cheers