2x 1 GB Ram -> works fine, 4x 1 GB -> no signal

d00d · 14 Jun 2008 at 22:51

when i put 4x 1 gb ram (2x kingston, 2x ocz) into my mainboards socket i won't get a display signal and all fan's are running on full-speed. when i'm running on 1,2 or 3 gb, everything works fine.

mainboard is an asus p5kr with the latest bios version 0605.

any ideas ?

int · 14 Jun 2008 at 22:52

Are you running them in the right slots, i.e OCZ in 1 & 3, Kingston in 2 & 4?

d00d · 14 Jun 2008 at 22:52

yes. i've had the same mainboard before and it worked with 4gb but then i returned the board and got a new one with which it doesn't work.

RJC · 14 Jun 2008 at 22:54

Possible faulty stick, download memtest and test each one.
Are all the memory modules same speed, voltage ect.

Rob

soulhunter123 · 14 Jun 2008 at 23:22

This is usually caused, believe it or not, by ram which isn't properly seated. Unless it's seriously faulty it usually won't prevent the computer from booting up properly.

Either way, why not remove all 4 modules and put them back one by one - make sure to use a lot of pressure so that they're securely in and all the white "security clips" are fully depressed, too.

thefishdude · 14 Jun 2008 at 23:48

had a no signal prob recetnly when i overcloced my cpu and ram and forgot to change the ram volatge to 2.1v sooo check your volatges and maybe up t hem a lilttle bit for the ram

d00d · 16 Jun 2008 at 23:25

8 hours of memcheck without any errors, so the sticks should be fine.

the voltage is set to 2.00 V. thats within the specification of both brands.

imo the sticks are properly seated. i've got my 4 gigs running at the moment but when i turn off my pc later and turn it on tomorrow i'm pretty sure i'll get no signal again. so i will have to remove the 4th module and stick it back in to make the pc work. i've never had such problems before...

markyb · 16 Jun 2008 at 23:40

Overclocking?

I had this problem with my P5B-Deluxe. When all of the slots were filled with 1Gbs it would not boot up. Put everything back to stock and it booted perfectly.

mp260767 · 17 Jun 2008 at 08:42

have you upped the northbridge/chipset voltage by 0.1 ?

d00d · 17 Jun 2008 at 16:05

i'm not overclocking. everything is running on stock voltage. sometimes it looks like a loose connection to me but when i put the pc on and off for several times it often works again.

dan653 · 17 Jun 2008 at 16:08

mp260767 said:
have you upped the northbridge/chipset voltage by 0.1 ?

try them individually and if all are working, do what he said, it'll probably need it to cope with 4 dimms

mp260767 · 17 Jun 2008 at 17:15

d00d said:
i'm not overclocking.

you dont need to be, some boards like the 0.1 to help them deal with the 4 sticks.

d00d · 17 Jun 2008 at 21:06

i dont know on what voltage i have to set, it's set to AUTO.

mp260767 · 18 Jun 2008 at 00:02

d00d said:
i dont know on what voltage i have to set, it's set to AUTO.

if you click on it should see something like auto, 0.10, 0.15, 0.20 etc

d00d · 19 Jun 2008 at 18:17

auto
1.25 V
1.40 V
1.55 V
1.70 V

thats what i can select.

mp260767 · 19 Jun 2008 at 19:21

i'd try the 1.40 first, then the 1.5.