(Solved)Z390 Phantom ITX wont boot

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   I'm newly building the PC. after connecting all parts to the mother board, i turned on the pc. nothing displays on monitor, the cabinet's front fan is connected to the CPU/Water Pump Fan Connector. its led will flash brightly every 2 seconds. the 3 leds on bottom of the motherboard glow red and flash green occassionally. the gpu led's also glow red and flash green occassionally. does these flashing lights indicate any thing related to not booting?

Edited by ASRock_TSD - 11 Jun 2020 at 11:14am

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gowtham Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09 Jun 2020 Status: Offline Points: 22	Post Options Post Reply Quote gowtham Report Post Thanks(0) Quote Reply Topic: (Solved)Z390 Phantom ITX wont boot Posted: 09 Jun 2020 at 3:14am
	I'm newly building the PC. after connecting all parts to the mother board, i turned on the pc. nothing displays on monitor, the cabinet's front fan is connected to the CPU/Water Pump Fan Connector. its led will flash brightly every 2 seconds. the 3 leds on bottom of the motherboard glow red and flash green occassionally. the gpu led's also glow red and flash green occassionally. does these flashing lights indicate any thing related to not booting? Edited by ASRock_TSD - 11 Jun 2020 at 11:14am

ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8727	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(1) Quote Reply Posted: 09 Jun 2020 at 3:51pm
	Dear Gowtham, Thanks for posting the query. Regarding your question, let's try: 1. Install only one RAM to different slots. 2. Reinstall the CPU. 3. Press the clear CMOS for more than 3 seconds. (To clear CMOS, please remove the power cable) Kindly refer to the page.10 #16 for the clear CMOS button. https://download.asrock.com/Manual/Z390%20Phantom%20Gaming-ITXac.pdf 4. If possible, kindly try with a different memory module. 5. Kindly refer to the following link to see if a newer BIOS is required. https://www.asrock.com/MB/Intel/Z390%20Phantom%20Gaming-ITXac/index.asp#CPU With thanks, ASRock TSD Edited by ASRock_TSD - 09 Jun 2020 at 3:52pm

gowtham Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09 Jun 2020 Status: Offline Points: 22	Post Options Post Reply Quote gowtham Report Post Thanks(0) Quote Reply Posted: 09 Jun 2020 at 9:43pm
	Thanks a lot. DDR4_A1 worked a week back when I tried reinserting the newly bought DDR4 RAM couple of times. Yesterday I bought PCIe NVME SSD. I decided to clean off the dust from motherboard so removed all the components except CPU (I'm not newly building the PC its about to be a year old, I lied). When I reinserted all the components and powered on the CPU, it didn't boot. since morning I tried reinserting the DIMM at least 20 times. The DIMM works in DDR4_B1 but not in DDR4_A1. Now as you said I reinserted processor, reset the CMOS and powered on the CPU. It worked! I think just resetting the CMOS without reinserting the processor should suffice.