Forum Thread

Upgraded RAM but system reboots while trying to load Windows

addtd2sd 1,413 320 January 16, 2016 at 04:06 PM
I tried upgrading this Windows 10 desktop's RAM (custom build) from a 1x2GB to 2x4GB but the system won't boot for some reason.

So far I've tried :
1. Updating the BIOS to the latest.
2. Unplugging the power cord and removing the CMOS battery and reseatting the RAM.
3. I tried installing only 1 stick at a time and rebooting the machine.

Strange thing is that my BIOS finds the installed RAM and reports it correctly 3920MB when I had only 1 stick.

Inserting both 4GB would send the machine into constant doesn't even make an attempt to load Windows.

It's a 64 bit OS so it should have no problem identifying it. The only thing I could think of is that the speed of the RAM is 1600 but my motherboard settings shows only 1033 as the max speed which I think should just downgrade the overall speed and not prevent it from loading Windows.

If I remove both new RAMs and install the old 1x2GB stick it would work as expected.

I also tried mixing the 2GB with the 4GB stick and it went into a never ending reboot.

Motherboard : asus p7h55 m le
Previously installed RAM : Mushkin PC3-10666 9-9-9-24 1.5V
New RAM : PNY 8GB (2X4GB ) 1600MHz (PC3-12800) 1.5V

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Joined Sep 2006
L6: Expert
1,413 Posts
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Original Poster
Update: I was finally able to load the OS after putting 1x2GB and 1x4GB sticks. Windows 10 recognizes 6GB in total but says only 3.45 GB usable). Not sure why.
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Joined Jun 2005
Let Sleeping Dogs Lie
5,842 Posts
2,384 Reputation
You might be mixing double sided ram with single sided

here is some info

here is your memory list
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