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My new ram causes blank screen

L

lelarh

Junior Member
Hi there, i just bought myself some new ram that i could throw into my PC, bought 2 sticks of 1600 mhz 4gb kingston. When i tried booting with all my Ram together it wouldn't work, i believe it's due to the fact that my old ram sticks are 1333 mhz. So is there a chance i can use all 4 sticks (2 with 1666 mhz and 2 with 1333mhz) or can i only use one kind, and if i only can use one type how do i change the bios to 1666 mhz because every time i boot with the 1666 mhz sticks i get a blank screen and no power to keyboard, mouse , etc.
I checked if my motherboard is compatible with the new ram sticks and there shoulnd't be a problem.

or is it because the volt aren't right? i tried to change the volt on my new ram to 1.65v but they i still got a blank screen

* Motherboard: m4a785td-v evo from asus
* New ram sticks: 2x4096MB DDR3 1600 MHz Kingston 1.65v
* Old Ram Sticks: 2x2048MB DDR3 1333 MHz Kingston 1.5v
 
Hm I wouldn't recommend combining those two pairs of sticks. I'm not sure which voltage your BIOS will pick, but if it chooses 1.5V the 1.65V sticks might not work well, and if it picks 1.65V, then over time it could damage the 1.5V sticks.

They will also run at the lowest common supported speed (1333).

To debug why you can't boot w/ the 1600 MHz sticks, remove all sticks but 1, clear CMOS, and try booting. If it doesn't work, move it around to different slots and see if you can get it to work. If none of them work, try it w/ the other stick.
 
ikachu said:
Hm I wouldn't recommend combining those two pairs of sticks. I'm not sure which voltage your BIOS will pick, but if it chooses 1.5V the 1.65V sticks might not work well, and if it picks 1.65V, then over time it could damage the 1.5V sticks.

They will also run at the lowest common supported speed (1333).

To debug why you can't boot w/ the 1600 MHz sticks, remove all sticks but 1, clear CMOS, and try booting. If it doesn't work, move it around to different slots and see if you can get it to work. If none of them work, try it w/ the other stick.
Click to expand...

i tried to only using one of the new sticks and used tried all the 4 slots, but none of them worked, then i tried with the other stick and nothing happened, do you think it would work if i used the old sticks to enter the bios and then enter the settings for the new sticks, then turn of my PC and swap the old with the new sticks
 
Are you running the latest BIOS on your motherboard? Did you try clearing your CMOS?

Your BIOS should be able to use the SPD on the DIMM to detect the appropriate settings.
 
ikachu said:
Are you running the latest BIOS on your motherboard? Did you try clearing your CMOS?

Your BIOS should be able to use the SPD on the DIMM to detect the appropriate settings.
Click to expand...

how do you clear the Cmos? i just moved the cap from the 2 pins (left and middle) over to the right and middle, but do you need to start the computer while the plastic cap is moved? and how do you update your bios?
 
You can download the newest BIOS from here, there should be instructions:
http://www.asus.com/Motherboards/M4A785TDV_EVO/#support_Download

Here are the instructions for clearing the data in the manual:
1) Turn OFF the computer and unplug the power cord.
2) Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3 for about 5~10 seconds, then move the cap back to pins 1-2.
3) Plug the power cord and turn ON the computer.

I noticed there is this section in their knowledge base:
The issue may be related to the voltage setting of your memory modules. The standard operating voltages of DDR2 and DDR3 memory modules, as defined by JEDEC, are 1.8V and 1.5V, respectively. However, some of the memory modules require higher operating voltage than JEDEC’s standards. In such case, the memory may sometimes not be able to function properly without enough voltage.
When you encounter instability issue, please first check the operating voltage of your memory modules, and please manually set the memory voltage accordingly in the BIOS.

So, yeah I guess if you don't have any luck, use one of your 1.5V DIMMs to get into BIOS, set it to 1.65V, and then shut it down and try to use one of the new DIMMs.
 
What kind of CPU do you have? Not all CPU can use 1600 DDR3. Also what is the Motherboard Manufacturer and Model/Chipset?

Maybe take all the ram out and boot the computer and it should just beep telling you there is no ram. Then put in the 1.6v and see if it will boot with just the new RAM. Helps if it is set to auto detect.

Better yet. RMA the New RAM and order new 1.5v of the specific size you want to use. When it comes take out the old ram and add the new RAM and boot up.
 
Last edited:
i tried to do the cmos with the cable cord pulled but nothing seemed to work, but i found out that the Bios will reset by doing so, so i cant change the settings in the bios the insert the new voltage, then restart with the new sticks.
 
I would not recommend running sticks running different voltages. Wouldn't even waste time with it. Either put your old sticks in to raise the voltage,then put them off to the side, or buy some sticks that are compatible with what you have.

Also, there is always the possibility the new sticks simply aren't compatible with the board. There are two BIOS updates that could the could include your specific memory, but only if your BIOS is older than 501, which was released in October of '09.
 
ketchup79 said:
Also, there is always the possibility the new sticks simply aren't compatible with the board. There are two BIOS updates that could the could include your specific memory, but only if your BIOS is older than 501, which was released in October of '09.
Click to expand...

i just formatted my PC so that might be the case but still how do i update the BIOS? i tried to download the update from the link given to me earlier in this post , but it turned out to be a rom file, so do i need to burn it onto a CD/DVD to update my bios?
 
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