Motherboard Lights up But Won£�t Turn On, no beep

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   Unfortunately it would seem the board has died. The flashing lights only indicate
that the part of the board that controls the LEDs is getting power. The last thing
I can think of for you to try would be to disconnect power from the board completely
with no CMOS battery installed and leave it that way over night. 

If that fails odds are high the board is dead. At this point you can try remove
the CPU, RAM and all other components. Connect the power to the board and bridge
the PSU's power on pins (on the 24 pin connector). This will force the PSU to 
turn on. Leave it on like this for a minute or 2 and check to see if anything
on the board is getting excessively hot. If not, put your CPU, RAM and GPU back
in and try power up the board again normally (not by bridging the PSU pins). If
it still won't power up then I am afraid the board is toast. I don't recommend 
bridging the PSU power on pins with components installed, if there is a serious
problem with the board it could fry them. 

Good luck

Edited by Xaltar - 18 Jan 2023 at 1:59am

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Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 23738	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Topic: Motherboard Lights up But Won£�t Turn On, no beep Posted: 18 Jan 2023 at 1:59am
	Unfortunately it would seem the board has died. The flashing lights only indicate that the part of the board that controls the LEDs is getting power. The last thing I can think of for you to try would be to disconnect power from the board completely with no CMOS battery installed and leave it that way over night. If that fails odds are high the board is dead. At this point you can try remove the CPU, RAM and all other components. Connect the power to the board and bridge the PSU's power on pins (on the 24 pin connector). This will force the PSU to turn on. Leave it on like this for a minute or 2 and check to see if anything on the board is getting excessively hot. If not, put your CPU, RAM and GPU back in and try power up the board again normally (not by bridging the PSU pins). If it still won't power up then I am afraid the board is toast. I don't recommend bridging the PSU power on pins with components installed, if there is a serious problem with the board it could fry them. Good luck Edited by Xaltar - 18 Jan 2023 at 1:59am


marta Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 Jan 2023 Status: Offline Points: 80	Post Options Post Reply Quote marta Report Post Thanks(0) Quote Reply Posted: 17 Jan 2023 at 7:34pm
	It?�s been running for 4 years and one morning it just wouldn't start.

marta Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 Jan 2023 Status: Offline Points: 80	Post Options Post Reply Quote marta Report Post Thanks(0) Quote Reply Posted: 17 Jan 2023 at 7:28pm
	the motherboard model is Fatal1ty X370, that has a pulsating red light when you turn it on.

marta Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 Jan 2023 Status: Offline Points: 80	Post Options Post Reply Quote marta Report Post Thanks(0) Quote Reply Posted: 17 Jan 2023 at 7:19pm
	Thank you for your help When I press the power button, the only thing that lights up are the motherboard lights. Now I have the board out of the box only: board, fan, cpu and psu. I turn it on with a screwdriver, I'm doing it correctly because I have another board where I can test it I have tried the fan on another board and it does work. I have reinstalled the cpu, and tested it. I cleaned the board from dust with air and Isopropyl Alcohol 99%. Clear CMOS jumper is not set and I removed the cmos battery If the board is broken, why do the lights come on? Thank you.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 23738	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 17 Jan 2023 at 3:58pm
	If nothing happens when you press the power button make sure you have no shorts. Under the motherboard the component legs can bend and touch each other in some situations. This will cause power safety to kick in and prevent the system powering up. Make sure you are using the correct pins for your power switch. Check to make sure your clear CMOS jumper is not set to the clear position, this will also prevent the system powering on. Remove the CPU and check for bent/missing pins.


cx5 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 15 Sep 2017 Location: Hong Kong Status: Offline Points: 2398	Post Options Post Reply Quote cx5 Report Post Thanks(0) Quote Reply Posted: 17 Jan 2023 at 11:01am
	thinking out loud. errr, what bios version??? but mobo can't start can't get into bios ..... what a silly question ....... then what CPU? some bios version have no beep sound !!! it's a fact.... without ram without GPU must have beep erro code 5 beeps is bad GPU or 4 beeps is bad ram or vise versa, completely no beep without ram without GPU is dead motherboard.
	x370taichi@3.50gen4 AX750 Optane900P SN770 3800x PosdonZro4 BarrowPWM-17w>420x140x28 XFX SWFT319 6900XT MSI RX560 LP to get Fluid Motion BlueskyFRC 75hz

marta Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 Jan 2023 Status: Offline Points: 80	Post Options Post Reply Quote marta Report Post Thanks(0) Quote Reply Posted: 11 Jan 2023 at 6:02pm
	I also replaced the PSU, removed the motherboard from the case, and started with a screwdriver. Motherboard lights up but won't turn on, nothing.

marta Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 Jan 2023 Status: Offline Points: 80	Post Options Post Reply Quote marta Report Post Thanks(0) Quote Reply Posted: 11 Jan 2023 at 5:30pm
	The motherboard lights up (Fatal1ty X370) but won?�t turn on. It doesn?�t beep, and the fan doesn?�t start. I removed everything but the CPU. I aslo tried starting it with different components, like 1 RAM, 2 RAMS, the graphic card, etc, but with no success. Is the motherboard defective? I?�m asking because the motherboard lights up. Thank you