Maybe i'm wrong maybe you've already seen the same problem but i didn't found it in topics so...
Starting i leave you my rig
Mobo: ASRock GS31M-GS Mini-ATX (BIOS Version 1.90)
CPU: Intel core 2 Quad Q9400 2.66Ghz Yorkfield
RAM: Kingston 2gb DDR2 SDRAM PC2-6400 (400 Mhz) NON-ECC Unbuffered (1x1gb)
Graphic Card: Nvidia Geforce 210 1gb DDR3
Storage: 1 -hdd seagate 120Gb 7200 rpm SATA
1 CD drive connected in IDE
PSU: ??brand 600W non Modular
OS: Windows 8.1 Pro 64 Bit
THE PROBLEM:
I bought 2 stick of new rams from ebay
at first i removed old rams and mounted new one.
the pc turn on and fans too but the monitor doesn't ,
i've googled for infor and tried everything i guess but nothing
what i tried:
put 1 singolar stick in slot 1 ---> pc works fine with 1 stick (2gb)
put 1 singolar stick in slot 2 --->pc works fine with 1 stick in slot 2 (2gb)
put 1 stick(of the new one) in slot 1 and 1 stick(old one) in slot 2 ----> it works fine (3gb) tried the same thing reverse it works fine
put new sticks in slot 1/2 (4gb) -----> the pc turn ON the Monitor and Keyboard DOESN'T turn on
Update BIOS from version 1.80 to 1.90(last one) Same thing it doesn't work (always with new sticks 4gb)
Enable from BIOS Memory Remap Features -----> same the monitor/keyboard are still OFF but the pc is running
at the moment i'm using 2gb of new ram in slot1 and 1 gb of old ram in slot2 and the pc works fine.
If you can help me somehow :unsure: