The type of dump you describe is Bugcheck 124. Typical causes can be overheating (usually caused by overclocking or poor air flow.patcooke , kemical , a couple of fans were very dusty when I blew on them . I'm going to see if it's made any difference , I will get back to you . Thank you .
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* Bugcheck Analysis *
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Use !analyze -v to get detailed debugging information.
BugCheck 124, {0, ffff998a03af0028, be000000, 800400}
Probably caused by : GenuineIntel
Followup: MachineOwner
PROCESS_NAME: NMDllHost.exe
Can you run winver and post a screengrab of it please.
Built by: 16299.431