Pc troubleshooting pc not posting

July 6, 2020 at 13:26:03
Specs: Windows 10, 1600 af vengence lpx 8gb single dim
i recentaly upgraded my cpu from a ryzen 3 1200 to a 1600 af and my pc stopped working when i turned it on my pc fans would spin but the screen was blank and my keyboards rgb wouldnt show up ive tried putting my old cpu in then nothing would happen i think its bc i dont have a fairly new bois update havent updated since 2017 and the 1600 af came out in 2019 ive made sure my cables are connected properly iv taken out the cmos and reseated the ram any help would be appreciated

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#1
July 6, 2020 at 16:33:39
Did you use fresh thermal paste between the CPU & heatsink?

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#2
July 6, 2020 at 19:30:03
By "fresh" I expect you mean "not re-used".
I have a tube of Arctic Silver left over from building a
computer 10 years ago. It should still be good, no?

-- Jeff, in Minneapolis


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#3
July 6, 2020 at 22:28:20
Some of it was reused from the old cooler because i only had a little left.

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#4
July 7, 2020 at 02:38:27

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#5
July 7, 2020 at 11:11:55
"By "fresh" I expect you mean "not re-used"."

Correct. You should NEVER re-use "used" thermal paste. I suspect that's your problem.


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#6
July 7, 2020 at 22:08:36
Ok can u explain how thermal paste fixs a pc not posting

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#7
July 10, 2020 at 14:54:19
"...explain how thermal paste fixs a pc not posting"

https://www.intel.com/content/www/u...

"Channeling the spirit of jboy..."

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#8
July 11, 2020 at 10:47:31
"ive tried putting my old cpu in then nothing would happen i think its bc i dont have a fairly new bois update"

Think about that statement. If the old CPU was working until you took it out, why would it need a BIOS update to work again? We don't know how you went about doing things but assuming you had the power cord unplugged, you took electrostatic precautions, & you didn't damage anything, the only thing left is the thermal paste application. You've told us you re-used the old/used paste, so that is most likely the problem.

All CPUs have built-in thermal protection circuitry. As soon as a system is powered up, if the CPU detects a rapid rise in temp, it shuts itself down to prevent it from burning out...this can happen in a fraction of a second. It doesn't know old paste is used, it just knows the temp jumped rapidly in a micro-second & presumes the temp will continue to increase. This doesn't affect power to fans or LEDs, just the CPU.

Get some new paste, completely remove ALL traces of the old paste from both CPU & heatsink, then reapply. Make sure to do it properly & I'd be willing to bet the system will post & boot up normally. Ryzens require the vertical line method of application.
http://www.arcticsilver.com/amd_app...
https://images.squarespace-cdn.com/...
(do NOT use an "X")

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