Gateway DX 4840
Intel i3 540 @ 3.07GHz
BIOS version P01-A0 03/19/2010
Chipset Intel H57
Memory originally 8 GB (4 x 2GB) dual-channel 1333 MHz DDR3 (double sided) CL9
Specs say “Upgradeable to 16GB using four DIMM modules)
Tried to upgrade to Kingston ValueRAM 16 GB (4 x 4 GB) 1333 MHz DDR3 CL9 DIMM SR x8 STD
(previously tried 4 Patriot sticks at 1600 MHz – wouldn’t boot in any combination)
Computer beeps once but won’t boot.
Tried new RAM in all 4 slots – won’t boot.
Tried original 2 GB in first two slots with new 4 GB in last two slots – won’t boot.
Replaced original 4 x 2GB ram (all four slots) – boots just fine.
Any idea what the problem is or what I can do?
