Originally Posted by jimwhite
Get a recent copy of CPUID.EXE and run it on your board... if history at Asus holds true, you'll find that the Asus bios probably ignored the numbers in your rams SPD chip and made up it's own... I can't count the number of RAM's I've RMA'd because of this.... for example: I have some RAM's that have, as the first entry, DDR2 666 @ 4-5-5-18 yet in an Asus P5Bdlx they get set at 5-5-5-15, which causes them to fail at Memtest (the 18-15 number is the problem). Manually set at the correct setting, they USUALLY pass, depending on the (in)accuracy of the Vram voltage regulator
I ran CPU-Z 1.48 with the BIOS memory settings set at default (auto). Under the Memory tab, it's incorrectly reporting DDR3. All the timings appear incorrect, too. e.g., 666.7 Mhz, CAS 15.0, tRCD 15, tRP 15, tRAS 63, tRC 63, and CR 2T. When I select the SPD tab, however, the RAM appears to be reporting itself correctly.
I tried manually setting the timings to 4-4-4-12 (I left all the other timings at auto) but the BIOS reported an overclocking error (at both 1.85V and 1.9V). I then returned everything back to auto except manually set tRAS to 12. CPU-Z is still showing all incorrect timings and I'm still getting the same Memtest+ error.
I'm not sure what to do next - I really am brand new to building PC's (my previous HTPC was a Macbook). I did purchase from Newegg so I suppose I can just try some new RAM. Any other suggestions (besides trying someone else's RAM or mobo since I don't know anyone as nerdy as me) would be much appreciated.
Sidenote: I just posted that things were hanging after a restart about half the time. It now seems to hang with every restart (Vista shuts down correctly but I just get a blank screen and hear the fans and DVD drive running). Bad motherboard??