Help me diagnose a computer crash?

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17 Apr 2012
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58
i built a new computer about 3 months ago. it was working just fine until recently. from the get go i OC'd the CPU and Vid card without problems. crashes are now showing up which makes me think the problem is not the OCs, but that could be totally incorrect. the types of crashes i have experienced in the last week are 4 in total:

1. crash watching youtube...sound card makes a loud buzz, computer crashes/restarts
2. crash while playing BF3, same buzz then PC restarts (this happened 1 time before the last week too)
3. the two weirdest ones happened 2 out of the last 3 times i shut the PC down. it sits on for a few days and i play games/browse without problems, then when i go to the windows logo and click "shut down" it shuts down...but in a crash form. then it restarts and then i get the "open windows in safe mode?" screen before i get back in and can actually shut it down properly

are these crashes indicative of an unstable OC? one time while playing with OCs i got a crash that resulted in a reboot, but i got the bios message "we have changed your config because your OC was unstable," and i have gotten no such messages in the last week of failures. i'm starting to wonder if the problem is my motherboard or my PSU. can anyone help me? again, all components brand new and purchased just 3 months ago. here is the equipment:

1. CPU - i5-2500k 4.0ghz @ 1.22v
2. MOBO - Gigabyte UD3H
3. RAM - G.Skill Ripjaws 8GB DDR3 1600
4. PSU - OCZ ModXStream Pro 700w
5. Vid - Radeon Sapphire 7850 OC 1200/1450 @ 1.176v
6. SSD - OCZ 60GB
7. HDD - Seagate 7200 250GB

also, is there any type of software i can run to test motherboard, PSU, and RAM for errors? crashes are tough, but i'm really hoping i can isolate where the problem is. just FYI, OCs passed stability tests and all temps look perfectly normal during idle and load. also, none of the crashes create BSODs. thanks for the help.
 
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I'd try it without the OC's for a week as baseline test for comparison maybe.

this and then see if you can get a 2nd PSU to test - can always send it back after a day DSR etc... but dont do that to OCUk do it to a competitor!
 
so i ran memtest86 and within 3 minutes it had 35,000 errors...

so i tried just 1 stick, worked fine. put the same stick in the other DIMM, no problems. popped the other stick in and within 3 minutes, 35,000 errors. so i think i know what the problem is...

i need the PC next week, and i doubt RMA process will be complete by then. will it hurt the computer to run on just one stick for a week?
 
so i ran memtest86 and within 3 minutes it had 35,000 errors...

so i tried just 1 stick, worked fine. put the same stick in the other DIMM, no problems. popped the other stick in and within 3 minutes, 35,000 errors. so i think i know what the problem is...

i need the PC next week, and i doubt RMA process will be complete by then. will it hurt the computer to run on just one stick for a week?

Running 1 stick will be fine for now, Though if you have a matched pair (which I assume you have), Then you will have to send both sticks back for RMA I would have thought? At least it was not something more costly!!
 
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