Have a x99a Tomahawk mobo had 16gb of ddr4 upgraded to 32GB RAM. Check msi and is compatible set. 4x4 to 4x8 so same Dimm slots. Wiill not boot and only Dimms 1 and 3 r lit up, rgb memory . 6 and 8 Dimns nothing. Put 16gb of gskill back only 8gb working but boots. Put 32gb set back in no boot same 2 sticks work , same 2 dont. A2 code comes up on mobo, HELP!!!
Not booting up
- Thread starter russellrc
- Start date
One more thing is first I tried new RAM 2 out or 4 was not working, weny back to old 2 out of 4 drmms not not showing up. Would not go into bios , tried goi6h though srttings in WIN10 numerous times no go.. Back to new ram 2 out of 4 dimms not lit up onrgb ram and will not boot
smorizio
Titan
- Jan 22, 2010
- 30,984
- 9
- 125,315
put one ram stick in make sure the mb bios is up to date. with led ram you may have to bump the ram voltage up. with one ram stick see if the other two slots are dead. if they are run the intel cpu test see if it fails. with the newer cpu if the cooler on to tight it can short out the ram. if it not the cooler check for bent pins under the cpu or a cpu seating issue.
Ill try those but this is old build with upgrade. 5820k cpu nothing new, plus its been working for 3 years. 2 modo is not going to bios at all do not know why. Iv tried going through settings in WIN10, thats when it would boot with old ram in. I keep trying to go to bios but can not , Lost ! Goes past it in fast boot, dont know how to disable it
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