Ok, so I've had my oc for a little while, after doing it, it initially started randomly throwing up 'dcom service failed, computer will restart' or something along those lines, and then would restart. Still doing that. Seems to only do it when I'm playing css or dota2 (so, very low use. Although, apparently the cpu still sees fairly high usage during a game). Doesn't seem to be an issue during other games (haven't tried too much though) Now, the issue itself; I've checked event logs and the following is happening: Plug and play service is kill Power service is kill Dcom server process is kill. Basically, all three of those will 'terminate unexpectedly' and trip the restart. One will cause it, the other two will try to cause it as well. Now, Initially we thought it might be power supply related, as I had a crappy ion2 600w power supply, that wasn't rated (so we thought that could be a cause, as it might be dropping down too low under use). A friend offered a trade for his 80+ bronze 700w cougar psu (Less crappy more or less), same deal. Literally does it whenever I'm playing css for a while. Not overly consistent, just does it. Doesn't seem to do it during cpu stress test, or benchmarking... Again, css isn't intensive, although the cpu usage thing I have says it's pretty much 80-100% most of the way through. So anyway, had a google around, looking for other ideas, came across people saying it's malware, and microsoft saying 'yeah, download our scanner, and delete whatever it says is the issue, and you're all g' Used malwarebytes as per the malware option, no dice. Didn't find anything (can't seem to make it do an overly in depth scan though. The microsoft one found millions of files, the malwarebytes did like 400thou), then did the microsoft program, which got up to about 1.2mill files before bluescreen (oc is stable). Found another person say they used malwarebytes anti root kit, which found something in one of the dll files. Tried that, it found nothing. Tried replacing the dll file, but couldn't, as it's in use (probably a sign it's a culprit). Can't replace it in safe mode either. Also scanned via avg free, and spybot, no dice. Tried microsoft scanner in safe mode, and blue screen at 300thou files checked. Anyway, before swapping psu, I took off the oc, and it was doing fairly well, didn't do it at all. Just seems to do it whilst overclocked. But yeah, so cpu usage seems to go insanely high for css, ram usage doesn't really move, and the restarts. command prompt 'shutdown /a' works, but then after a bit I lose sound, and then when the screens go black (from being inactive) they will (more often than not) not come back on. Just then I lost microphone abilities in css (but had music going, so sound stayed). Graphics card also did a weird kinda artifact like thing, which it never does otherwise (it's overclocked, but not hugely). Literally only does that when I've done the shutdown /a. I have the files to reinstall windows now, so, ready to do that if need be. But, figured I'd ask if there is a reletively straight forward fix (/ if it's better to fix than reinstall). I did go for a little while without an antivirus (was scanning with malwarebytes, and another spyware thing for a bit, under direction from an it friend after my norton sub ended.), didn't download anything stupid, didn't go anywhere sketchy, or do anything stupid as far as I'm aware. But yeah. Literally doesn't do it when I'm playing around with chrome, itunes and steam open (all the ram *****s. Although cpu usage does jump up and down a fair bit. Hits 100%, then jumps down to 56%, then down to 25%, and sits there till I do something in chrome), only whilst playing css and dota2. It didn't do it when I was playing dragon age inquisition on ultra (for some reason) Specs: phenom 955black edition c2 overclocked from 3.2 to 3.7 16gb corsair vengeance ram 970a-d3 mobo msi 7850 twin frozr cougar 700w 80+ bronze psu samsung 120gb ssd and two seagate 2tb hdd's Will post FRST64 logs in a second, just have to restart the computer.