my pc stopped working after i installed new ram

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xatlestx

Feb 16, 2018
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my pc starts up but my 2 monitors and keyboard dont get a signal. i upgraded from 2x4gb 1600mhz ram to 2x8gb 2400mhz, my pc doesnt even work if i put the old ram back, and i have tried reseting the motherboard and replacing its battery

this pc is my life and i dont have very much money to get parts so help is much appreciated
 
Solution
Darkbreeze
Ok, so they are both DDR3, 1.5v modules. Should be at least minimally compatible on the same platform. Even though the specs on the motherboard specifications page only shows support up to 1600mhz, the QVL list (Which does not mean that ONLY the listed modules will work, only that THOSE ones were actually tested on that board) shows support for 2400mhz modules.

Those modules are not on the QVL list, but that doesn't mean they can't work on that board necessarily. The biggest problem I see is that all of the higher speed modules shown to work on that board are 1.6v or higher, not 1.5v. That could be a problem.

I would try to simply get the system working again using the 1600mhz modules for now, using the method I listed above.

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xatlestx

Feb 16, 2018
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all my important specs are: cpu core i7 4790 motherboard asus lga1150 b85m - g , my old ram sticks where hyperx fury 2x4 and the new ones are corsair vengeance 2x8,
 
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Darkbreeze

Darkbreeze

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Jun 24, 2014
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I need the actual memory module model or part numbers. Also, are both of these DDR3? You are sure those 2400mhz sticks are not DDR4?

I would double check that you have FULLY seated the RAM, and install only one module for now. Then, unplug the power from the wall to the PC, remove the CMOS battery from the motherboard, press the power on button on your case for 10 seconds, wait another minute or so and then reinstall the CMOS battery, plug the system back into the wall and then try to boot with only one of the 1600mhz modules installed. Make sure it is installed in the correct slot for single module operation.

Is this the B85m-G 1.0 or 2.0 revision? This should be printed on the motherboard itself along the top edge next to the EPS 12v 4 or 8 pin connector that gives CPU supplemental power to the motherboard.
 
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Darkbreeze

Darkbreeze

Retired Mod
Jun 24, 2014
80,412
7,631
176,790
Ok, so they are both DDR3, 1.5v modules. Should be at least minimally compatible on the same platform. Even though the specs on the motherboard specifications page only shows support up to 1600mhz, the QVL list (Which does not mean that ONLY the listed modules will work, only that THOSE ones were actually tested on that board) shows support for 2400mhz modules.

Those modules are not on the QVL list, but that doesn't mean they can't work on that board necessarily. The biggest problem I see is that all of the higher speed modules shown to work on that board are 1.6v or higher, not 1.5v. That could be a problem.

I would try to simply get the system working again using the 1600mhz modules for now, using the method I listed above.

Was there anything else you did during this entire process that you have not mentioned? You didn't try to remove any modules while the system was powered on, or had the CPU out of the socket, or any other thing that could have created a problem?



 
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