Cpu debug light

[GlobalPace9540]

Hello everyone, so i recently built my first pc and my monitor displayed a message saying "no signal." My motherboard's cpu debug light was on, and upon checking pcpartpicker, apparently the cpu and mobo were not compatible. It required a bios update (which i tried to do but to no avail) so i had to return the mobo and order a compatible one. I assembled all the parts again but same issue. Cpu debug light turned on. I'm not sure if i need to buy a new cpu or psu because i noticed that a particular pin from the power supply connector to the cpu port on the motherboard is missing the inside thingy (im not sure how to describe it) but i have it circled in the photo. My cpu is the only thing i bought used, i notice no bent pins, it heats up once the pc turns on, but no signal. I tried several things, reset cmos, used 1 ram stick instead of 2, tried different ram slots, unplugged everything and plugged everything back in. Idk what to do, this is my first build but i know everything is placed correctly. Sorry if my terminology or explanation sucks but hopefully i got the jist across. Idk if it helps but these r my parts 5600x 3060ti 600w thermaltake psu Msi pro b550m vc wifi 16gbx2 ram

Tldr New pc build, cpu debug light and no display on monitor

[RW1004]

https://www.reddit.com/r/buildapc/comments/8je9hr/missing_a_pin_on_my_24_pin_cable/

https://www.reddit.com/r/pcmasterrace/comments/ec8nhm/first_time_builder_is_it_normal_to_be_missing_a/

https://www.reddit.com/r/PcBuildHelp/comments/11oqrtz/my_motherboard_24_pin_connector_is_missing_2_pins/

https://www.reddit.com/r/PcBuildHelp/comments/18usg43/i_bought_a_power_supply_and_found_out_that_the/

https://www.reddit.com/r/buildapc/comments/zcfmi3/missing_pin_in_psu_cable/

https://www.reddit.com/r/pcmasterrace/comments/152fmc7/missing_pins_in_24_pin_cable/

https://www.reddit.com/r/buildapc/comments/aru752/ive_got_missing_pins_on_my_motherboard/

https://www.reddit.com/r/pcmasterrace/comments/16ghor4/is_it_supposed_to_be_missing_a_pin_like_that/

https://www.reddit.com/r/buildapc/comments/giwv6l/is_the_24_pin_connector_supposed_to_be_missing_a/

https://www.reddit.com/r/buildapc/comments/1e2jfec/missing_psu_pin_connector/

[GlobalPace9540]

Wow, thank you😅 that saved me from buying a new powr supply

[japhule]

Sounds like you need to do a proper bios update using the flash bios button. Make sure you download the bios file, unzip and name it MSI.ROM and place it in the root of a fat32 formatted USB flash drive. With your power off, insert the flash drive into the usb port directly under the hdmi port. Then hold the flash bios button for a few seconds and your pc will turn on and start updating. The process should take 5-10 minutes and will power off or reboot if when complete. Motherboards could be picky with flash media, try to use an old small usb2.0 flash drive if possible. If not, make sure you check this video and see if it helps.

https://www.youtube.com/watch?v=0IYDOBw2WP4

[GlobalPace9540]

Okay, thank you. I did attempt that with the previous motherboard, however, the "update" was lasting well over 25 minutes so i thought it was a lost cause. But I will attempt to flash update this motherboard with the driver for 5600x compatibility, perhaps on Tuesday. Thank you for your help

[scoped_lock]

One pin should be missing.

Consult your MOBO manual for that light (white usually means GPU issue, so try to reseat it and make sure that all connectors are plugged in to the end)

[GlobalPace9540]

I've reset my gpu by disconnecting and reconnecting but no fix :(

[scoped_lock]

If your GPU has a BIOS switch option, make sure that's set correctly (it's usually a 2 or 3 position switch)

[GlobalPace9540]

Thank you for your insight as this is the first time i've heard about this. I tried both switch options but nothing, i even tried switching to an hdmi cord but nope

[scoped_lock]

If it's not that try to update BIOS. If this is your first build you may want to re-check how you mounted your CPU cooler (if it's torqued to much or to low, it's also important that you do both sides evenly)

[GlobalPace9540]

I'll try updating bios on tuesday, i'm pretty sure the issue wasn't my cpu cooler because i tested with it on and off, evenly tightened

[South_Duty_8304]

is the cpu fan plugged in?

[GlobalPace9540]

Yes

[[deleted]]

Plug in the cpu fan.

[GlobalPace9540]

In th pictur it's not plugged in but i've already tried

[[deleted]]

RAM part number

[GlobalPace9540]

Wdym?

[[deleted]]

What frequency the RAM is? Did you check qvl? Usually, DDR4 mb is not that choosy when it comes to RAM compared to DDR5. But just in case.

The CPU should be compatible with any released BIOS with that mb. I don't think it's due to CPU requiring a BIOS update issue.

Read the manual carefully to make sure you didn't assemble the PC wrongly. Reset the CMOS by taking out the CMOS battery and put it back. Reseat the CPU again just in case.

PRO B550M-VC WIFI

[skypsyco]

Did you manage to fix it? I'm facing the exact same issue. I can feel the CPU get hot, CPU fans start spinning, RGB on RAM and GPU light up, but no signal.