[SOLVED] applied thermal paste then pc won't boot.

Dec 25, 2018
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okay so basically, i unplugged everything OUTSIDE the case didn't undo anything INSIDE my pc except my fan... which i am hoping wasn't a mistake... now only the leds on the motherboard turn on. no fans and it won't even attempt to boot. there's no beeping or flashing but i think something in my pc is fried....

so a step by step of what i did.... turn off pc, turn off psu, struggle to unhook fan, unhook fan, use a can of air to dust the fan and pc, use rubbing alcohol to clean cpu and fan, apply rice sized glob of thermal paste, struggle to reattach fan, reattach fan, close case, plug in monitor, turn on psu, press power button, nothing... i've tried unplugging my graphics card and a few wires and plugging them back in and it still doesn't turn on.

Help please...

Edit: i have a ryzen 7 1700x if that matters
 

Wrecker75

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Aug 27, 2019
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And if that does nothing maybe you switched the PSU while moving it around, might just be switched off right now. You should at least see a light or fans spin, but if the fan isn't plugged in correctly it may be protecting itself and not turning on.
 
Dec 25, 2018
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i thought i added a rice grain size of paste. could i have accidentally added too much and that's why it's not turning on?
 

Wrecker75

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Aug 27, 2019
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Amount of paste wouldn't stop it from turning on, between a rice grain and about the size of a pea is acceptable, anything less than a giant blob is fine.

Something else is causing it to not boot.
 

Wrecker75

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Aug 27, 2019
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Either find the cmos clear jumper or remove the silver button battery, unplug the power supply and hold down the power button. Resetting bios might do it.
 

Wrecker75

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Aug 27, 2019
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Reseating the CPU has a good chance of doing it too, wasn't even paying attention to the fact that it's AMD, probably the issue, especially if you pulled straight up on the cooler, best to give the cooler a wiggle to loosen paste on AMD coolers.
 

InvalidError

Titan
Moderator
Since you struggled with removing the HSF and putting it back on, a damaged motherboard could be a possibility.

First though, make sure that everything is connected properly and that you haven't forgotten something like the EPS12 (CPU power) cable, you won't be able to turn the PC on without it.
 

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