Re: 2GB of Ram work, not 4GB? x64 Vista
according to his sig he is.
@ OP, I,m having the same issue at present, although my memory is spec'd to run 1333MHz at 7-7-7-20-1N, and does so with 2x 1GB in there, it will not boot at anything lower than CAS8 with 4GB.
I suggest you back off your oc and try running at 800MHz at 5-5-5-15-2N, if you can boot at that then the next decision is to try tighter timings (4-4-4-12-2N) or overclock to a higher frequency or a bit of both.
E8600@ 4.25GHz, 1.325V | Thermalright Ultra 120 eXtreme + Scythe Slipstream 120 | Asus Rampage Extreme| 4GB Corsair 2000MHz 8-8-8-24 @ 1600 6-7-6-24| ASUS 9800GTX| Pioneer 18X SATA DVD-RW | 320GB + 500GB WD SATAII | Antec True Power Trio 650W | Thermaltake Sonata | Vista Ultimate x64 SP2/Win7 Ultimate