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PC unable to boot when using old and new RAM

Last response: in Memory
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October 3, 2013 9:26:22 AM

I just bought a 4GB DDR3 1333 Apacer RAM, but my PC is unable to boot if I have it inserted with my Kingston DDR3 2GB RAM...I am able to boot with only my Kingston RAM inserted but unable to boot with my Apacer RAM inserted with or without the Kingston RAM inserted...

Specs -
Windows 7 32-bit
AMD Radeon HD 5500 Series 1GB
Pentium(R) Dual-Core CPU E6600 @ 3.06GHz, 3066 Mhz, 2 Core(s), 2 Logical Processor(s)

I'm a noob at this LOL

More about : unable boot ram

a c 163 } Memory
October 3, 2013 9:30:21 AM

Hi and welcome to Tom's forum.

What motherboard do you have? What's the model of your rig?
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a b } Memory
October 3, 2013 9:30:46 AM

Mixing different types of RAM is a crap shoot, you could post your MOBO model, that will provide more compatibility information than your CPU.
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a c 85 } Memory
October 3, 2013 9:46:16 AM

on the older 775 mb look at your mb guild. you could boot with ddr3 or ddr2 but not mix them.
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a c 85 } Memory
October 3, 2013 10:04:25 PM

look on the mb guild for qal ram and try pick up a stick on that list.
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October 4, 2013 2:46:19 AM

smorizio said:
look on the mb guild for qal ram and try pick up a stick on that list.


I actually got the right stick, the mb box says it's compatible with DDR3 1333 RAM sticks, and that's what I got, I even made extra sure that the employee of the shop I bought it from knew what sticks were compatible with my motherboard..

could it be that since I only have a 32-bit OS that it can't handle more than 4 or 6GB of memory? or should I fiddle around in the BIOS setup and change the voltage or something??
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a c 163 } Memory
October 4, 2013 5:35:43 AM

Could you test the Apacer RAM in another rig?
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October 4, 2013 2:25:15 PM

saint19 said:
Could you test the Apacer RAM in another rig?


I tested it on my friends SU, which also has the same motherboard as I do, with the same result - unable to boot if I have the 4GB stick inserted with or without the old RAM stick...
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!