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Computer Wont' Start With Extra Ram


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#1 Nic4433

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Posted 13 February 2008 - 12:12 PM

I just built this PC. I bought 8 gigs of RAM for it. I couldn't install windows with more than 3 gigs so I took out 3 sticks. Now when I put in the extra RAM my computer doesn't start at all. The lights come on but it doesn't send a signal to the monitor. I am using a 780i mobo, with OCZ 2 gb ram. What do you think the problem is?

Thanks


Nic

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#2 smurfgod

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Posted 13 February 2008 - 12:20 PM

what windows are you installing? and have you tried swapping out sticks, and what slots they're in?
First thing i'd try is sticking the RAM that you actually had boot up and everything, and stick it in the slots you emptied when you took the 3 sticks out. if it still boots up then take the sticks you took out and put them in the place of the ones that are known good. If that works then maybe you didnt get them in all the way?
Also XP only recognizes so much RAM, not sure if it would stop it from booting but having the extra still won't do you any good

Edited by smurfgod, 13 February 2008 - 12:24 PM.


#3 Nic4433

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Posted 13 February 2008 - 01:34 PM

I installed Windows vista 64 bit. I will switch out the sticks to see if it still boots.

#4 Nic4433

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Posted 13 February 2008 - 01:59 PM

I switched out the stick I was using with the other 3, one at a time and it worked fine. But if I try to use more than two sticks I get a stop error. 0x0000007e. It does it everytime with more than two and it did it once with two. But it works fine with one. I have no idea what to do next. Help will be appreciated,

Nic

#5 smurfgod

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Posted 13 February 2008 - 02:16 PM

So, taking 1 stick at a time they all booted up individually? If all the sticks are good like i think you're saying the next step would be taking one stick and putting it in each of the other 3 slots. If all the slots boot, my next best guess would be maybe you have an old bios that won't play well with more than 4G of ram, but that's out of my league maybe one of the gurus here can help with that, but definitely test the slots first

#6 Sneakycyber

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Posted 13 February 2008 - 07:37 PM

What motherboard exactly do you have. A quick look at the Nvida Site on the 780I chipset doesn't tell me how much memory your board supports. Are all the memory modules the same?
Chad Mockensturm 
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#7 Nic4433

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Posted 13 February 2008 - 08:56 PM

What motherboard exactly do you have. A quick look at the Nvida Site on the 780I chipset doesn't tell me how much memory your board supports. Are all the memory modules the same?



Its the A1 version and supports 8 gigs of RAM. Yes they are all the same.

It works fine with one. And all four work separatly. But if I put in more than one I get the blue screen of death. Sometimes I get an error like this 'IRQL_NOT_LESS_OR_EQUAL' but sometimes its just a stop error without that part. The IRQL error is the error I was getting when I was trying to install Vista which is why I took out the extra RAM in the first place.

I am totally lost on this one. AFAIK I have all updates for the mobo and Vista. I don't know what it could be.

#8 Sneakycyber

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Posted 13 February 2008 - 09:57 PM

Who makes the motherboard?
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#9 Nic4433

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Posted 13 February 2008 - 10:18 PM

Who makes the motherboard?


EVGA nVidia nForce 780i SLI A1 Version

#10 graeme22

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Posted 14 February 2008 - 06:23 PM

have you gone on your bios and slowed your ram timings down , worked for me

#11 graeme22

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Posted 14 February 2008 - 06:26 PM

what mhz do they run at ? try peg it down 2 the next one ,,, i had the same problem ... i slowed the mhz down now runs fine

#12 DaChew

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Posted 14 February 2008 - 06:37 PM

this is all rocket science and brain surgery

ocz makes several 2 gig modules, which exactly is yours?

http://www.newegg.com/Product/ProductList....me=4GB(2+x+2GB)
Chewy

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#13 DaChew

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Posted 14 February 2008 - 06:47 PM

and what power supply, exact model number? Video card(s)
Chewy

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#14 Nic4433

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Posted 14 February 2008 - 08:35 PM

Memory

PSU

Vid Card


I think my problem might be Vista related. I might try going back to XP. I heard of a few people having problems similar to mine with more than 3 gigs of RAM on Vista.

#15 DaChew

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Posted 14 February 2008 - 08:53 PM

not sure if it matters but which vista 64 bit version?

well those components look very good, next step would be to check the bios settings for the memory

is everything running stock speds and auto setting and mostly defaults?

Edited by DaChew, 14 February 2008 - 08:59 PM.

Chewy

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