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Black screen when boot up

Joined
Aug 27, 2011
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Processor Intel core i9 13900ks sp117 direct die
Motherboard Asus Maximus Apex Z790
Cooling Custom loop 3*360 45mm thick+ 3 x mo-ra3 420 +Dual D5 pump and dual ddc pump
Memory 2x24gb Gskill 8800c38
Video Card(s) Asus RTX 4090 Strix
Storage 2 tb crucial t700, raid 0 samsung 970 pro 2tb
Display(s) Sammsung G7 32”
Case Dynamic XL
Audio Device(s) Creative Omni 5.1 usb sound card
Power Supply Corsair AX1600i
Mouse Model O-
Keyboard Hyper X Alloy Origin Core
I try to change llc and limit power and on the cpu then it works but not stable so I restarted then boot up and black screen now. I try different gpu, different ram stick, remove some ssd but it still has black screen but mice and keyboard led are on. what is going on?
 
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