Go Back  DVD Talk Forum > General Discussions > Tech Talk
Reload this Page >

help - computer won't POST after installing new memory

Tech Talk Discuss PC Hardware, Software, Internet and Other Technology

help - computer won't POST after installing new memory

Old 09-28-11, 07:02 PM
  #1  
DVD Talk Special Edition
Thread Starter
 
Join Date: Jan 2001
Location: New York, N.Y.
Posts: 1,708
help - computer won't POST after installing new memory

i bought a new 4 gig memory dimm. took out the 2 older one and put the new one in. computer would not turn on.

i put back my previous 2 dimm and the computer gives won't POST and gives me 3 long beeps. I am not sure, but i might've put in the new DIMM backwards.
i am sure i am putting my old dimms back correctly and in the correct slots (1,3). i even tried putting just 1 in each slot and still 3 long beeps.

Did i fry my motherboard when putting in the new DIMM backwards?
timewaster is offline  
Old 09-28-11, 07:16 PM
  #2  
DVD Talk Limited Edition
 
Join Date: Feb 2000
Location: Sunny Hawaii
Posts: 6,662
Re: help - computer won't POST after installing new memory

It would be very difficult to install it backwards.

You should check to make sure the modules are seated fully. Also, you might want to check your motherboard/computer manual and see what 3 long beeps means.
TheBang is offline  
Old 09-28-11, 09:43 PM
  #3  
kd5
DVD Talk Hall of Fame
 
kd5's Avatar
 
Join Date: May 2010
Location: Ohio, USA
Posts: 9,386
Re: help - computer won't POST after installing new memory

First you should look up your computer specs and find out if the motherboard is even capable of supporting a 4gb stick in a single slot. Also make sure it's the correct type of memory for that computer.

You can't install memory backwards. The memory modules are designed in such a way that they can only be installed in one direction.

The computer must be completely off (better yet, unplugged) before you mess around inside the computer, and discharge any static electricity in your fingertips before you touch anything inside the case. If you tried to remove a stick of memory while the computer was on, you've just fried something.

Memory should be installed by pushing on both ends (not in the middle) of the memory module until the clips on either end clip into place.

If the computer still will not boot with the original memory installed, sometimes removing the motherboard battery (ONLY if the computer is off and unplugged), leaving it out for awhile, then replacing the battery, plugging the computer back in, turning it on, booting to the bios, setting the proper date & time, and booting on into Windows.....can solve a host of problems.

If it STILL does not boot, call your local computer repair shop (preferably not Best Buy). -kd5-

Last edited by kd5; 09-29-11 at 07:37 AM.
kd5 is offline  
Old 09-29-11, 08:43 AM
  #4  
DVD Talk Special Edition
Thread Starter
 
Join Date: Jan 2001
Location: New York, N.Y.
Posts: 1,708
Re: help - computer won't POST after installing new memory

yes. it takes 4Gig stick.
computer was off when i changed the memory. on/off switch next to power supply was switched off.

i tried clearing the cmos with the jumpers but that still didn't work.
i guess i must've somehow fried slot 1 DIMM on my motherboard.
timewaster is offline  
Old 09-29-11, 08:48 AM
  #5  
DVD Talk Limited Edition
 
Nefarious's Avatar
 
Join Date: Apr 2001
Location: In the Middle
Posts: 5,144
Re: help - computer won't POST after installing new memory

Can you give us the make & model of the motherboard? Is it 3 short beeps? Are you absolutely sure you are seating the memory fully & properly?
Nefarious is offline  
Old 09-29-11, 10:31 PM
  #6  
DVD Talk Hero
 
Join Date: Aug 2000
Location: Bartertown due to it having a better economy than where I really live, Buffalo NY
Posts: 29,699
Re: help - computer won't POST after installing new memory

I've had ram look to be fully seated but one of the little locking lever things was just slightly short of being fully locked and had it cause issues
mikehunt is offline  
Old 09-29-11, 10:42 PM
  #7  
DVD Talk Hero
 
Numanoid's Avatar
 
Join Date: Aug 2000
Location: Down in 'The Park'
Posts: 27,882
Re: help - computer won't POST after installing new memory

Hey, mikehunt -- that video in the YouTube link in your sig has been pulled.

And OP, if you think you fried slots 1 or 3, try slots 2 and/or 4.
Numanoid is offline  
Old 09-30-11, 11:07 AM
  #8  
DVD Talk Special Edition
Thread Starter
 
Join Date: Jan 2001
Location: New York, N.Y.
Posts: 1,708
Re: help - computer won't POST after installing new memory

MB is MSI P55-CD53
3 beeps - each beep is about 1 second long.
i cannot try the other slots. The MB will not post without memory in slot 1.
( i tried the other slots anyway and got the same 3 beeps)
timewaster is offline  
Old 09-30-11, 08:56 PM
  #9  
DVD Talk Limited Edition
 
Join Date: Feb 2000
Location: Sunny Hawaii
Posts: 6,662
Re: help - computer won't POST after installing new memory

You're installing the module into DIMM1, correct, which is the second slot on the motherboard.

Have you tried resetting the CMOS? There's a three-pin jumper block near the motherboard battery called JBAT1. If you short pins 2 and 3, I believe that clears the CMOS settings.
TheBang is offline  
Old 10-03-11, 12:06 PM
  #10  
DVD Talk Special Edition
Thread Starter
 
Join Date: Jan 2001
Location: New York, N.Y.
Posts: 1,708
Re: help - computer won't POST after installing new memory

Originally Posted by Todd B. View Post
You're installing the module into DIMM1, correct, which is the second slot on the motherboard.

Have you tried resetting the CMOS? There's a three-pin jumper block near the motherboard battery called JBAT1. If you short pins 2 and 3, I believe that clears the CMOS settings.
yes. i tried it.
see post on 09-29-11 09:43 AM
even tried removing the cmos battery for a few hours too.
timewaster is offline  
Old 10-03-11, 02:50 PM
  #11  
DVD Talk Legend
 
Join Date: Jul 2005
Location: Working for Gizmonic Institute
Posts: 10,430
Re: help - computer won't POST after installing new memory

Originally Posted by timewaster View Post
MB is MSI P55-CD53
3 beeps - each beep is about 1 second long.
i cannot try the other slots. The MB will not post without memory in slot 1.
( i tried the other slots anyway and got the same 3 beeps)
3 beeps is a base memory read/write test error.

If you've tried different sets, maybe dimm 1 slot is defective.
crazyronin is offline  
Old 10-05-11, 10:52 AM
  #12  
DVD Talk Special Edition
Thread Starter
 
Join Date: Jan 2001
Location: New York, N.Y.
Posts: 1,708
Re: help - computer won't POST after installing new memory

i installed my new motherboard last night.
The old memory worked, but the new memory did not.
Looks like i fried both slot 1 of my motherboard and memory.
lesson learned - be very careful when adding memory.
timewaster is offline  
Old 10-06-11, 01:03 PM
  #13  
DVD Talk Hero
 
Join Date: Aug 2000
Location: Bartertown due to it having a better economy than where I really live, Buffalo NY
Posts: 29,699
Re: help - computer won't POST after installing new memory

Originally Posted by Numanoid View Post
Hey, mikehunt -- that video in the YouTube link in your sig has been pulled.

And OP, if you think you fried slots 1 or 3, try slots 2 and/or 4.
thanks for the heads up. He ran into issues about copy right. I'll find his new hosting page
mikehunt is offline  
Old 10-06-11, 01:11 PM
  #14  
DVD Talk Legend
 
Dr Mabuse's Avatar
 
Join Date: Jun 2007
Location: 75 clicks above the Do Lung bridge...
Posts: 18,950
Re: help - computer won't POST after installing new memory

Classic example of an ESD event most likely.
Dr Mabuse is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Archive Advertising Cookie Policy Privacy Statement Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.