captnastro

actualy, thanks to timohour, changing 0x204 to 0xFF. made it possible to boot with custom timings. therefore probably not only read/write issue

here i still see 1T, when 0x1EE is on 0xE, even if 0x1EF is on 2T. tried the given numbers from you. but didn't work. extracted via AIDA after CMOS reset i got other numbers: tCL = 11 [0x1FE -> 0xB] tRCD= 12 [0x1FF -> 0xC] tRP = 13 [0x200 -> 0xD] tRAS = 34 [0x201 -> 0x22] tRC = 47 [0x209 -> 0x2F] tRFC = 278 [0x204 ->0x116] tRRD = 6 [0x206 ->0x6] tWR = 16 [0x203 ->0x10] tWTR = 8 [0x207 ->0x8] tRTP = 8 [0x208 ->0x8] tFAW = 27 [0x20B ->0x1B] tried those, but still, didn't work, won't boot up this way.

only changing 0x1EF doesn't seem to do anything, CPU-Z still shows 1T yeah, came to the same conclusion. my timings are 11-12-13-34. Tried those of timohour, CL12-12-12-36, wasn't able to boot too... 0x1EF at 0x1 0x1EE at 0x1 0x1FE at 0xC 0x1FF at 0xC 0x200 at 0xC 0x201 at 0x24 EDIT: just saw now, that you edited your Post. give me few min.

Thanks for your answer. tried these settings, with following results: CMOS Reset, booting with 1 Stick @ 2133 possible. boot with 2 Sticks is not possible. Pressing PowerButton starts the System, ScreenOff, after few seconds shutdown setting EFI var 0x1EF to 0x2 / EFI var 0x1EE to 0x1 no boot at all, doesn't matter if 1 or 2 Sticks, ScreenOff, after few seconds shutdown CMOS Reset, 0x1e6 at 0x04 (1867) boot with both sticks possible. setting 0x1EE to 0x1 makes the system unbootable again. ScreenOff, after few seconds shutdown CMOS Reset, 0x1e6 at 0x04 (1867) boot with both sticks possible. setting 0x1EE to 0x1 and 0x1FE to 0xC makes the system unbootable again. ScreenOff, after few seconds shutdown CMOS Reset, 0x1EF at 0x02, 0x1EE at 0x1, 0x1E9 at 0x0, still not able to boot. ScreenOff, after few seconds shutdown

Still not able to boot :-/ . Any advise? UPDATE: able to boot with 1 Stick, but not with 2.

hi there! i've got also 3840QM and HX321LS11IB2K2/16 Ram Sticks, but my system doesn't boot. is this still up to date? or did you change something else? to which Value should i change the 0x1EF?