Question PC wont boot after changing thermal paste causes

Oct 29, 2020
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Hi,

Recently I've changed the thermal paste on my CPU and since then it wont boot(fans spin, lights on but no post or bios), I found the issue to be the RAMs which is a 2 pcs 4GB ddr3 running at dual channel mode of different brands , now after reseating it everything works again and memtest and diagnostis doesnt find any problem. Now this also happens to my previous PC , both PC uses different brands of rams. The issue is the RAMS actually have no problems at all and this happens randomly around 1 time per year , reseating the ram actually works fine , the problem is its not just a normal reseat, there seems to be a specific way to insert the ram for it to work , like push hard the slot then slightly pull it back in the middle. This have been my problem for my 2 previous PC and its bugging me out as I dont actually had any problem with the PC , no BSOD only this problem of no boot occasionally , lately it happens to me 100% of the time every time I open the PC case and touch anything in the MOBO like removing the GPU , or inserting a chassis FAN on the mobo CHA header , something seems to bug the ram and decide not to boot up until I reseat it. I had read before something about the BIOS giving an initial settings to different brands of rams for them to boot properly next time , could it be that messing something in the mobo like removing the FAN HEADERS messes with this setting ? I need someone to shed some light on this






 

Ralston18

Titan
Moderator
Refer to the motherboard's User Guide/Manual.

There may be a requirement that the first installed RAM module be installed in a specific RAM slot.

Overall, dual channel requires the installation of a matched set of RAM modules purchased as a kit.

Unmatched modules can lead to any number of problems.

The photographs show different RAM modules.
 
Oct 29, 2020
3
0
10
0
Refer to the motherboard's User Guide/Manual.

There may be a requirement that the first installed RAM module be installed in a specific RAM slot.

Overall, dual channel requires the installation of a matched set of RAM modules purchased as a kit.

Unmatched modules can lead to any number of problems.

The photographs show different RAM modules.
Yes they are both kingston but of different model #, is that the only cause for the no boot? though reseating any 1 of them makes the pc boot up fine again its not a very serious problem but its bugging me out.

there are 3 scenarios that triggered it
  1. putting a chassis fan the I plugged something in the cha_fan header
  2. disassembled the gpu to get the pads/paste changed
  3. disassembled the cpu heatsink to put in a new thermal paste
its like any changes of components in the mobo triggers a no boot scenario until the ram is reseated, isnt this some kind of security feature? as this motherboard is business oriented and have TPM on it (Asus P8Q77-M)
 

ragnarok0274

Great
Sep 12, 2020
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I would just like to point out two things:
  1. The RAM sticks are in slots 1 and 3, not 2 and 4.
  2. You have some nice RGB fans, but an Intel stock cooler. ??
 

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