I have a six year old R7 with 4 original equipped pc3-12800U 4GB memory modules. System would not POST, only black screen with full power to system, fans running and hard drive activity at initial power on. Originally I suspect the video card but after through testing I discovered it would boot with only one memory module installed in slot 1.
I have tested all 4 chips and computer will boot and run with any of the 4 modules installed in slot 1, but will not POST with any combination of 2 modules installed. Not 1 & 2 slots populated like the manual instructs, not 1 & 3 or 1 & 4. I even tried 3&4 and 2&3 and 2&4. Only with one module in slot 1 will it POST.
I updated the system BIOS to 11, I also updated the Intel Chipset and the Intel management engine controller.
I have never seen a mother board fail in this manner where one slot functions but the others will not allow boot. Any advise as to possible troubleshooting and finding solution short of buying a refurbished motherboard.
I have tested all 4 chips and computer will boot and run with any of the 4 modules installed in slot 1,
but will not POST with any combination of 2 modules installed.
Sounds like a bad motherboard to me.
However, you won't really know until it's repaired and stress-tested.
Be sure you have studied its PDF manuals.
Dell Rockstar
Microsoft Windows and Apple iOS Developer (Retired) - Like many of you, I can appreciate a good game-engine. - I answer questions here, but I'm not a Dell employee. - Consider giving posts you like a "thumbs-up" - Posting models-numbers and software versions speeds trouble-shooting. - Click "Mark as Accepted Answer" on any post that answers your question best.
New (refurbished) mother board installed - same result - boots fine with any memory chip installed in slot 1, will not even POST with any chip installed in slots 2 thru 4. I feel now this has to be something wrong wrong with the CPU since I attempted to boot without any hard drive installed and got a BIOS hard drive not found error message when a memory chip was installed in slot one but nothing with a chip in any other slot.
darrelm47
3 Posts
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Posted March 5th, 2019 11:00