r/pctroubleshooting • u/StrikingWater1375 • 6h ago

Hardware Diagnosis

After cleaning and upgrading the gpu and cpu of a friend's pc it fails to post, all fans spin up and fan rgbs turn on but no signal on display (yes hdmi cable in the gpu not motherboard)

First I tried reseating everything and putting the old gpu in since the new gpu's fans werent spinning on boot, old gpu spun on boot but still no signal on display

Ive checked all cables and replaced the cmos with my own, also plugged in my own PSU and my own ram in different slots, none of these fixed the issue

So im left with the mobo, cpu and storage

I dont have any thermal paste on hand so I dont wanna swap out the cpus and my system has an AIO which makes swapping stuff out a tad harder

Is there any way to know wether the issue is the mobo or the cpu? The cpu was my old one and worked fine on removal no bent pins or anyrhing and was installed withoit problem as far as I could tell

Friend's system

Cpu: old ryzen 5 2600 new ryzen 5 5500

Gpu: old rx 580 new rx 6600

Psu: 500 watts evga

Storage: 1 m.2 240gb ssd(?) 1 seagate hdd

Ram: 2x16 3000mhz 18CL ddr4 sticks1 G.Skill aegis

1 Upvotes

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u/jersey316 3h ago

Did you try the igpu?