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#19
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Getting there
*******
You should be able to test the sticks, one stick at a time. I do tests that way, so the test result ("which DIMM is bad") is unambiguous. The following is for "thoroughness of testing". My favorite way to test, is two sticks in single channel mode, so that the "upper stick" is 100% tested, while the "lower stick" is 99% tested. You swap the two sticks and repeat the memtest single pass, so that the stick now sitting in the high slot gets 100% tested too. This is mainly for stuck-at faults, to make sure any 640K reserved locations don't harbor bad RAM. Don't forget proper etiquette when RAM testing. Power off, wait 60 seconds (or until the green LED goes out), before pulling the RAM sticks and pushing them in again. That's to make sure there is no power in the slot. ******* This is what I'm running at the moment. I used to have four sticks of Kingston CAS6 (that failed). All I could find at the time in a CAS5 was this stuff, so that's what is in the machine at the moment. Four 2GB sticks. The Northbridge is probably the flakiest part of the setup now. I think I was pretty lucky to get this (I might have asked at the computer store and they still had some). Usually what happens, is after a memory generation is "Done", all the CAS5 disappears and only some crappy CAS6 is left. It's pretty hard to find fancy memory ten years after the motherboard came out. By crappy, the Kingston I bought ran abnormally hot, and the voltage wasn't over stock. I even added a cooling fan over the RAM just in case, for the Kingston stuff. The Corsair right now is cooler and isn't scaring me on temps. It doesn't look like it's still in circulation. https://www.corsair.com/us/en/Catego...N2X4096-6400C5 Sometimes, the chipset is also a limitation. It's possible the X48 can't run below CAS4. That's if you could find some RAM that low. So eventually, the timing inside the Northbridge doesn't allow "cranking CAS to zero". It has a limit too (a minimum CAS value). Paul Thanks Paul. Upgraded to Q9650 CPU and renewed thermal compound on Intel heat sink fan. As before, first memtest failed. Now running second memtest. Samsung 4GB modules are cheap. Time to buy more from eBay for total 16GB RAM memory. Q9650 CPU works OK. When I set up the SSDs' SATA and power cables, I ran into trouble. Win10 tried to boot. It failed because it did not find GTX950 HDMI display driver, even though those drivers were enabled last time Win10 booted. Win10 said the PCI VGA was not compatible with Win10. I may have a troubleshooting CDROM somewhere. Still running Memtest. This should not stop Windows 10. Windows (as is traditional) has a built-in VESA driver. All video cards have a standard legacy interface, which the Microsoft Basic Display Adapter driver can see. The VESA style driver usually limits the resolution to a safe value - this avoids lawsuits that happened during the "non-multisync" era, where monitors were ruined by OSes using too high a resolution setting. The companies have never forgotten this, and to this day limit themselves to 1024x768 for example. And yes, a 4:3 resolution looks strange on a 16:9 monitor :-) Is there more than one display device in the computer ? Would the second display device be 1024x600 resolution ? There has got to be some explanation for why the MBDA driver did not cut in and bring up the system. I can bring up Windows 10 with an FX5200 in the machine. And the FX5200 doesn't have a Windows 10 driver. Paul Thanks Paul. BartPE is limited by lack of drivers. I think I should make a bootable Win10 USB stick and use Win10 to update BIOS. Then maybe my copy of Win10 on SSD will boot. |
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