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Windows 7: can ram be bad even though it passes all tests


22 Aug 2011   #1

Windows 7 Home Premium 64-bit SP1
 
 
can ram be bad even though it passes all tests

ok i have a question. i ran all tests on my ram sticks i have in my laptop. everything passes no matter what ram test i run... can ram still be bad and just not picked up buy tests.. reason i ask is i did a memory assessment speed and i it came back as 1778.38mb to me that seems slow..... a few weeks ag\o i ran it it said 2178.88

so i am at a loss....

my ram is kingston ddr2 II 800mhz 4gigs worth 2 gig sticks...

any info thanks.. cause i am thinking of just buying brand new sticks and see what happens...


My System SpecsSystem Spec
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22 Aug 2011   #2

Windows 7 Home Premium 64bit sp1
 
 

Well to be honest that might just be it

Passing ram test are good things but take in mind you have a weak cpu 1.66ghz

That alone is a performance block you are on a Lappy that is actually decent don't worry to much unless you are getting bad delays and multiple mem crashes

If not don't worry enjoy what you have ,You don't have a high performer so i would'nt be to worried
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27 Aug 2011   #3

Windows 7 Home Premium 64-bit SP1
 
 

anyone else.. my browser still crashes and once in awhile the system will just crash....
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28 Aug 2011   #4

Windows 7 64-bit enterprise
 
 

Have you run memtest86+ from a boot CD? I would have a hard time believing that your RAM is bad if it passes that. There are other stress tests you could run, like IBT or prime95, but I would hesitate to to that on a laptop because of the lack of cooling.

It would be better to put the RAM into a desktop so you could really stress it and see if there is an issue or not. When was the last time you re-installed windows? I always check software before hardware, as least to rule it out.

LMHmedchem
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28 Aug 2011   #5

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by LMHmedchem View Post
Have you run memtest86+ from a boot CD? I would have a hard time believing that your RAM is bad if it passes that. There are other stress tests you could run, like IBT or prime95, but I would hesitate to to that on a laptop because of the lack of cooling.

It would be better to put the RAM into a desktop so you could really stress it and see if there is an issue or not. When was the last time you re-installed windows? I always check software before hardware, as least to rule it out.

LMHmedchem
As long as you have some of these:
Name:  smd1.gif
Views: 455
Size:  16.1 KB
so you can put laptop SODIMMS into your desktop DIMM slots, and then BE CAREFULL WITH VOLTAGE!


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28 Aug 2011   #6

Windows 7 Home Premium 64-bit SP1
 
 

i have run every test i can think ofr to test the ram on my laptop... its crazy i say... i have reinstalled windows 7 a few times... thinking maybe it was a bad install or something.. and that dont work.. so i went and put xp back in same thing with the browsers i am so puzzled....
My System SpecsSystem Spec
28 Aug 2011   #7

Windows 7 64-bit enterprise
 
 

This could be a motherboard issue as well, which is one reason to try to test the ram in another rig. If you do try the ram in another computer, just make sure to set the bios to the exact specifications that are printed on the RAM chips.

Something like Intel Burn Test or Prime95 will find errors that Memtest does not, but be careful running something like this on a laptop. I would have a fan pointed at the laptop and have it up on something so that there is air flow under it. Also, these kinds of programs are intended to be run along with temperature monitoring software like RealTemp.

If you can't get the ram into another rig, try to borrow some RAM. You should also test the RAM one stick at a time, most of the time, a RAM problem will only affect one stick.

Does this happen with all browsers, meaning have you tried more than one browser?

LMHmedchem
My System SpecsSystem Spec
28 Aug 2011   #8

Windows 7 Home Premium 64-bit SP1
 
 

Quote   Quote: Originally Posted by LMHmedchem View Post
This could be a motherboard issue as well, which is one reason to try to test the ram in another rig. If you do try the ram in another computer, just make sure to set the bios to the exact specifications that are printed on the RAM chips.

Something like Intel Burn Test or Prime95 will find errors that Memtest does not, but be careful running something like this on a laptop. I would have a fan pointed at the laptop and have it up on something so that there is air flow under it. Also, these kinds of programs are intended to be run along with temperature monitoring software like RealTemp.

If you can't get the ram into another rig, try to borrow some RAM. You should also test the RAM one stick at a time, most of the time, a RAM problem will only affect one stick.

Does this happen with all browsers, meaning have you tried more than one browser?

LMHmedchem
hi there yes i have tried every browser i can think of...

i did try to run WMD test and i get this error.. cant rem all of it but went something like this... WMD could not processes system memory map deficiencies memory map contained ranges that extra 4gigs.... something like that...
My System SpecsSystem Spec
28 Aug 2011   #9

Windows 7 64-bit enterprise
 
 

Check in your motherboard bios and make sure that your RAM settings (frequency, voltage, and timings) match what is printed on the sticks. If everything is set to auto, see if you can manually change the settings to the correct values. There should be a label on the ram giving the timings and voltage. After than, check one stick at a time in each slot. That should let you know if you have a bad stick or a bad motherboard slot.

If that checks out, you may want to look at flashing the motherboard bios. It could have been corrupted. I would check with support for the laptop manufacturer before doing that if it is still under warranty.

Other than doing that, it will be very hard to check out your hardware without either some known good ram sticks, or another laptop, to repeat tests on.

LMHmedchem
My System SpecsSystem Spec
28 Aug 2011   #10

Windows 7 Home Premium 64bit
 
 

It is possible for RAM to be bad, yet pass many RAM tests, such as the one built in to Windows.

However, MEMTests86 will usually pick it up and is probablly the most accurate test for memory.


As suggested already, make a MemTest disc and let it run overnight. If your RAM is the issue, it will find it.
RAM - Test with Memtest86+


I have seen though, memory pass even Memtest, yet 1 stick was actually bad.
But it would show up under Linpack (IntelBurn test) as failed result, only on 1 stick.

Its actually pretty rare something like this happening though. Ive only seen it happen one time and tested lots of bad hardware.
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