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What can cause a PC to randomly completely freeze?


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#1 King Mustard

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Posted 02 May 2012 - 20:44

I am having this issue.

I believe it's usually due to bad RAM, yes?

If I do have a bad RAM stick, how can I test it and produce proof so that I can show the retailer the stick is dodgy?


#2 +Brando212

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Posted 02 May 2012 - 20:47

memtest86

#3 OP King Mustard

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Posted 02 May 2012 - 20:48

View PostBrando212, on 02 May 2012 - 20:47, said:

I have 2x 4 GB sticks.

Am I right in thinking I should remove all non-essential hardware (TV tuners etc.) and test one RAM stick at a time (by removing the other one) overnight?

EDIT: Oh, I don't have a CD writer or any blank media so I can not use "Memtest86" according to the download page.

#4 +Fus10n

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Posted 02 May 2012 - 20:49

memory. run memtest then start removing hardware one by one

#5 OP King Mustard

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Posted 02 May 2012 - 20:50

View PostFus10n, on 02 May 2012 - 20:49, said:

memory. run memtest then start removing hardware one by one
Wouldn't it be more effective to remove all non-essential hardware first?

Then removing one RAM stick so that Memtest86 only tests one stick at a time? (help to find which one is defective)

#6 +Brando212

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Posted 02 May 2012 - 20:51

View PostKing Mustard, on 02 May 2012 - 20:48, said:

I have 2x 4 GB sticks.

Am I right in thinking I should remove all non-essential hardware (TV tuners etc.) and test one RAM stick at a time (by removing the other one) overnight?

EDIT: Oh, I don't have a CD writer or any blank media so I can not use "Memtest86" according to the download page.
do you have a flash-drive? you should be able to set up a bootable flash-drive with it on it if you do

edit: here, download the auto installer for usb http://www.memtest.org/#downiso

#7 Hum

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Posted 02 May 2012 - 20:51

Always take out, and Reseat your RAM before running tests.

RAM sticks that are not tight can give you a false Memtest reading.

Happened to me.

Also, Windows 7 comes with a built-in Memory tester.

#8 TRC

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Posted 02 May 2012 - 20:52

Check your hard drive for bad sectors also. Make sure your fans are running and everything is clean in case it's an overheating issue.

#9 OP King Mustard

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Posted 02 May 2012 - 20:53

View PostBrando212, on 02 May 2012 - 20:51, said:

do you have a flash-drive? you should be able to set up a bootable flash-drive with it on it if you do

The download page shows "Ver 4.0a - USB key image (Only installable from Linux)" so I am not sure - I am running Windows.

View PostHum, on 02 May 2012 - 20:51, said:

Always Reseat your RAM before running tests.

RAM sticks that are not tight can give you a false Memtest reading.

Happened to me.

Thanks! I will do this :)

View PostTRC, on 02 May 2012 - 20:52, said:

Check your hard drive for bad sectors also. Make sure your fans are running and everything is clean in case it's an overheating issue.

My primary drive is an SSD. Also, my PC is very cool.

#10 Billmaster

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Posted 02 May 2012 - 20:53

The motherboard itself can be bad.

#11 +Brando212

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Posted 02 May 2012 - 20:57

here's the memtest86 usb installer for windows http://www.memtest.org/#downiso

it's the auto installer

#12 OP King Mustard

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Posted 02 May 2012 - 20:57

View PostBillmaster, on 02 May 2012 - 20:53, said:

The motherboard itself can be bad.
Is there a way to test this?

I am presuming not :/

#13 Hum

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Posted 02 May 2012 - 20:58

^ There are system testers, if you do a Search.

http://www.freshdevi.../freshdiag.html

Heavyload is a freeware program that is intended to stress all resources of a PC ...

http://www.brighthub...cles/72433.aspx

#14 +Brando212

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Posted 03 May 2012 - 16:39

any luck king?

#15 Jub Fequois

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Posted 03 May 2012 - 16:56

Possibly unrelated, but this system completely freezes if I use *any* drivers apart from Catalyst 8.951 WHQL for my Radeon HD 7970.

In other words, have you changed any drivers for any of your hardware recently? Have you tried updating/reverting drivers?

Also, check your PSU if the RAM checks out.