This is my first real request for help from the good folks on the Badcaps forum.
I recently purchased a Asus Prime b250 Pro as an electronics project motherboard but the stated symptoms are not what I expected. I was both pleased and slightly disappointed that after putting in a i3 6100 processor the motherboard posted no problem. I installed Windows and ran a few stress test programs, checked the memory, and figured the previous owner was wrong in thinking there was an issue.
I put in my i5 7600 (from my main work machine) and booted. The UEFI popped up with a message to say that a change of processor had been detected and that I should press F1 to restore BIOS, which I did. The processor was correctly identified in the BIOS settings window and I saved and exited. There was no POST. No beeps, just the processor fan. I tried this several times.
I removed the battery to clear the CMOS and again the F1 to reload BIOS and then nothing other than the fan.
I went back to the 6th gen processor and, after a BIOS reset all good again.
Flashed the BIOS to latest. Checked HWInfo - the CPU Vcore was fluctuating between .7 and 1.25 volts, but nothing strange otherwise. Anyway, every time I change from the lower spec chip to the higher I get exactly the same no POST symptom. The problem seems to manifest itself with the change of processor profile.
The RAM and CPU are both on the support list and I have tried two PSUs.
So questions: has anyone seen this behaviour before? Are my Vcore reading normal? and, lastly, could it be a faulty BIOS chip? - I noticed a strange indelible white mark on the Winbond chip (which I cannot identify btw?) and have included an image.
Many thanks in advance.
I recently purchased a Asus Prime b250 Pro as an electronics project motherboard but the stated symptoms are not what I expected. I was both pleased and slightly disappointed that after putting in a i3 6100 processor the motherboard posted no problem. I installed Windows and ran a few stress test programs, checked the memory, and figured the previous owner was wrong in thinking there was an issue.
I put in my i5 7600 (from my main work machine) and booted. The UEFI popped up with a message to say that a change of processor had been detected and that I should press F1 to restore BIOS, which I did. The processor was correctly identified in the BIOS settings window and I saved and exited. There was no POST. No beeps, just the processor fan. I tried this several times.
I removed the battery to clear the CMOS and again the F1 to reload BIOS and then nothing other than the fan.
I went back to the 6th gen processor and, after a BIOS reset all good again.
Flashed the BIOS to latest. Checked HWInfo - the CPU Vcore was fluctuating between .7 and 1.25 volts, but nothing strange otherwise. Anyway, every time I change from the lower spec chip to the higher I get exactly the same no POST symptom. The problem seems to manifest itself with the change of processor profile.
The RAM and CPU are both on the support list and I have tried two PSUs.
So questions: has anyone seen this behaviour before? Are my Vcore reading normal? and, lastly, could it be a faulty BIOS chip? - I noticed a strange indelible white mark on the Winbond chip (which I cannot identify btw?) and have included an image.
Many thanks in advance.
Comment