[SOLVED] Pc fires up then shuts off

[Scott_Thatcher]

Just changed some fans on my radiator. Was working fine yesterday, since I changed the fans my pc will turn on, but then during the boot process power off. I’ve gotten to the bios once. Tested my 24 pin with my power supply tester. Not sure what caused this.

 

[Ralston18]

More information needed:

Why were the fans changed?

No beep codes, no motherboard LED's lit?

Update your post to include full system hardware specs and OS.

Open the case and ensure that all cables, cards, RAM, and jumpers are fully and firmly seated.

 

[Scott_Thatcher]

More information needed:

Why were the fans changed?

No beep codes, no motherboard LED's lit?

Update your post to include full system hardware specs and OS.

Open the case and ensure that all cables, cards, RAM, and jumpers are fully and firmly seated.

More information needed:

Why were the fans changed?

No beep codes, no motherboard LED's lit?

Update your post to include full system hardware specs and OS.

Open the case and ensure that all cables, cards, RAM, and jumpers are fully and firmly seated.

fans were changed because the bearings were going bad. Reseated my 24 pin, cpu 8pin. Haven’t reseated my graphics card or ram. No beeps or codes. Whole pc shuts down before any of that is displayed.
Specs: ryzen 7 2700x, 16gb gskill aegis, Corsair h100i v2, Asus crosshair VII mobo, Corsair rm1000x (psu is ridiculous, it’s from when I had crossfire 290x cards), rtx 2070 evga xc ultra, 2x 500gb Samsung m.2 nvme drives.

 

[Scott_Thatcher]

Update: reseated graphics card and ram. Board is giving me code 4b. Unfortunately it’s not in my manual lol. I think it might be a ram issue. Odd thing is, when my board gives me a code it stays on. Idles with no problem at all. When it doesn’t give me a code it cuts power off.

 

[Ralston18]

"4b": you are referring to the Q-Code LED, correct?

Are there any other LED's lit; Q or Hard Disk?

Motherboard User Manual:

https://dlcdnets.asus.com/pub/ASUS/...335.706640752.1578918006-453788094.1569978805

Do verify.

Pages 1-13 and 1-14 list the LEDs. The Appendix list the error codes and descriptions but, as you stated "4b" is not listed.

The following link lists "4B" as "OEM post memory initialization codes"

https://www.evga.com/support/faq/FAQdetails.aspx?faqid=59363

Unfortunately the list is applicable to EVGA. And if you enter "4B" the highlighted number of results provide a variety of potential issues.

Could the code be "46"?

Check the following link:

https://rog.asus.com/forum/showthread.php?19102-Error-Code-46-On-Maximus-V-Formula-Z77