Really strange PC issue

Ronaldspiers

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Sep 25, 2013
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*Disclaimer: this post is going to be very long so i apologise for this*

Hey all, I've read this forum a lot for months now and this is my first post, which unfortunately describes problems I've been having with my PC.

So, about 2 or 3 months ago, when I would wake my PC up from "sleep", on occasion the display would not turn up immediately and then when it did turn up it was because of an nvidia driver crash. So I installed the old driver I was using and it continued to do it, so i tried an even older driver and beta drivers and it still did it (still does too).

Then about 1 month or so ago when doing nothing intensive (web browsing) the pc started to randomly freeze for anywhere between 10 seconds to 1 minute. If it does this once it will continue to do it at least once every 5-10 minutes until i restart the PC. If I don't restart the PC my mouse cursor will eventually turn "rainbow coloured". If i do restart the PC then it works fine for a while but will eventually freeze again.

To add to all of this, last week I got 2 BSOD, they had the error "a clock interrupt was not received on a secondary processor". So I thought "damn the CPU is on the way out", I googled the problem and found out this can also be caused by a multitude of other things, so I did a windows update and haven't had that BSOD since.

I have no idea what is wrong but here is my system specs and what I have done as troubleshooting so far.

CPU: i3-540 @3.07 GHz
Mobo: Asus P7H55-M
GPU: Nvidia GTS 450
PSU: 650W (dont know the brand will check after i've made this post)
2HDDs: one 250 GB and one 500GB

Troubleshooting so far:

I have done gpu driver updates, windows updates but to no avail.

I have also done a prime 95 test and measured the temperature:-
- At idle the CPU runs anywhere between 30-35 celsius on average with some rare spikes up to 50.
- At 100% load on Prime 95 in small FFT mode one of the cores got as high as 79 celsius and i was recommended not to let my CPU get to 80 so i stopped the test. The other core never went abve 63 degrees.
- Playing BF3 multiplayer 64 player for about 40 mins the temperature was usually around 60-68 degress with one of the cores (the one spiking to 79 in prime 95) going up to 71 degrees.


Now, I have no idea what any of that means, I am quite new to all this PC tech stuff and have been trying to learn as much as I can. So if you have any complex troubleshooting ideas for me then you may need to explain as if to a 5 year old.

Any help you can give me on this would be greatly appreciated.

P.S. The pc is about 3 years old now, and when I bought it (as a gaming computer) I had literally 0 clue as to what I was doing. I read that it could "run crysis on high" and thought that means it must be good. I'm a little more tech savvy these days though and do plan on building a new computer within the next 6-8 months.

P.P.S I should also mention that I did not build this PC, it was prebuilt by a UK PC company called Chillblast.

Thanks to anyone who read all of this I know it was a lot to take in.
 


I'd probably recommend doing it overnight, not because you can do it longer, but since I'm guessing you obviously use your computer during the day, and it would be easier to troubleshoot other things after you know the memtest succeeded (or didnt)