cpu on way or mobo had it?

MCFC_ANDY

MCFC_ANDY

MCFC_ANDY

Soldato
Joined
9 Aug 2013
Posts
3,271
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S. Wales
i have a tomahawk b450 and a ryzen 1700, untill recently the cpu has been running at 3.8ghz, its been fine for a year at least until last week, everytime i try to o/c the cpu it fails reboot, and get recovery blue screen. ive checked fan and re pasted cpu, temps are good. just cant seem to make sense of it, memory is fine and o/c'ed.
at stock temps go no higher than around 47 degrees running cinebench, i think its more like the mobo, but not 100%
thx in advance
IMG_20200511_063006.md.jpg
 
Not a good error. :(

Try in this order:

Set BIOS to defaults (turn off all overclocking)
Test RAM (memtest) or swap out the SIMS (take them all out apart from 1, then trial & error a bad SIM)
PSU not delivering enough power (test with a spare PSU)
GPU, swap out GPU
File corruption (repair boot disk, attempt boot with Live disk)

Good luck!
 
yep, have tried the above, it only happens when i try to overclock cpu, everything else will run and oc fine, the psu is all good as have defaulted bios many times and when just try to oc the cpu it will fail, bsod appears. so can pretty much exclude psu,gpu and memory. which brings me back to cpu or mobo, now the cpu looking at hwmonitor even boosts fine upto 3.7ghz through the cores and temps under 50 at load. looking at hwmonitor all seems fine, so confused to say the least.
only thing can think of, is maybe some short on mobo??
 
Coojeekitten said:
PSU not able to reliably deliver the extra voltage for overclocking? Mobo short only when overclocking seems less likely.
Click to expand...
i understand what your saying, though i dont seem to understand, surely the gpu will pull more juice from a psu, than say a cpu. so if everything is at stock and i oc the cpu and it fails, surely it wouldnt be the psu if i can oc gpu and mem together and they run fine. i have a evga 750 g2, its only couple yrs old if that, i dont want to rma it, unless im 100% certain its that
 
Your CPU has probably degraded so the voltage you had set for stability is no longer enough, try giving it more voltage or reduce the overclock by 100mhz or so.
 
cheers for info, something really screwy here. ran memtest other day was fine, have defaulted bios again, leaving everything at default, then set my ram is 3000mhz non xmp as always, bang bsod. so running memtest again but showing no errors.
Going to pull pc apart and reseat everything and see how that is and go from there
 
ok, i think it was a memory heat issue, for last yr ive had it set to 3000mhz cpu at 3.8ghz and vega 64 at 1700mhz and all was fine. so i have set it to xmp2 2998mhz and so now it has let me oc the cpu to 3.7ghz, push voltage a bit higher to 3.75, but running cinebench my temps when through the roof, showing 81 degrees compared to mid 60's before. so now thinking maybe its air flow issue. i did have issue with the fan, had to seat fan higher as was hiting the vrm heatsink.

update, fan reseated, temps down to 72 at full load @3.7ghz, will leave it there for time being.

thx all
 
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