PC rebooting after playing

I need someone to tell me what`s the problem with my PC..
It reboots after playing less than half an hour at ultra settings games like GTA5, DOOM, new Hitman and NFS...


Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz, 3600 MHz

GeForce GTX 970

16gb ram

Operating System Windows 10 Pro Professional

Thank You in advance

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Reply to: PC rebooting after playing
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Clarification Request
Is that "after" or "during" game play?
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during game play
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Will read the Speccy and reply to top post later.

How to use canned air, replace heatsink compound is now on many many YouTubes.

Start simple with the power removed and canned air. As you see in the articles, do not spin the fans to 100,000 RPM.

PS. My mistake. I want to check out the PSU too. Let's hear what make, model number and how old. Sometimes folk reuse their old PSU and it's tired.

Post was last edited on January 17, 2017 10:53 AM PST

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Speccy reading. Looks like malware.

1. is for the Environment variables that looks suspicious.

While I didn't read much further yet, this alone is trouble. Try Grif's set of scans (all free) at

2. Kuaizip
You can google that but looks to be infected.

3. BIOS looks to be 2 versions old. I'd do the cleaning and virus removal before this.

4. Voltage
All the voltages look off. When this happens I use a Volt meter to check.

5. DNS.
I find using other than the router for DNS is better. There are tomes on the web about NAMEBENCH and using here. Not a cause of boots. Just something I like to tune up.

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1. I`ve tried Grif's set of scans and removed almost all threads except for UCGuard

Services: UCGuard

Folders: C:\Program Files (x86)\Kuaizip

Files: C:\Windows\SysNative\Drivers\ucguard.sys

Registry: HKLM\Software\Classes\KuaiZip_FileAsso.Origin

Software: Chrome
                 Data -

3. What can I do about 2 versions old BIOS?

4. What about the voltage? I don`t quite understand

Thank You VERY much

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Try this to remove it.
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Dafydd as you can see in previous post of mine I`ve already tried those methods and with ADWCleaner... nothing. ADWCleaner finds it and it won`t remove it. Eventually stops responding :/

However, I don`t believe that this malware is problem for restarting pc while playing with max settings

Thank You

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What I believe as well.

But the report is there for us to pick over.

If you find malware Grif's list won't deal with, head over to and follow the posting rules there.

Until malware is gone, it's suspect. I won't write it is this.

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Thank YOU

I`ll check that. And if that won`t help i will format my pc eventually Happy

Thank You

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