B320 crashing

[billb33]

As I got no joy from my thread about my B320 blue screen error problems & in the absence of any Lenovo technical support in the UK I'm trying again. 

Someone has told me it could be due to overheating & is this possible?

The 2 different error codes I get are:-

Problem signature:   Problem Event Name: BlueScreen   OS Version: 6.1.7601.2.1.0.768.3   Locale ID: 2057

Additional information about the problem:   BCCode: f4   BCP1: 0000000000000003   BCP2: FFFFFA80066C4060   BCP3: FFFFFA80066C4340   BCP4: FFFFF80002FD88B0   OS Version: 6_1_7601   Service Pack: 1_0   Product: 768_1

Files that help describe the problem:   C:\Windows\Minidump\050112-14414-01.dmp   C:\Users\Bill\AppData\Local\Temp\WER-77485-0.sysdata.xml

Read our privacy statement online:   http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409

If the online privacy statement is not available, please read our privacy statement offline:   C:\windows\system32\en-US\erofflps.txt

Problem signature:   Problem Event Name: BlueScreen   OS Version: 6.1.7601.2.1.0.768.3   Locale ID: 2057

Additional information about the problem:   BCCode: 1000007e   BCP1: FFFFFFFFC0000006   BCP2: FFFFF80002D22E5A  BCP3: FFFFF880009A96C8   BCP4: FFFFF880009A8F20   OS Version: 6_1_7601   Service Pack: 1_0   Product: 768_1

Files that help describe the problem:   C:\Windows\Minidump\050812-16598-01.dmp   C:\Users\Bill\AppData\Local\Temp\WER-28563-0.sysdata.xml

Read our privacy statement online:   http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409

If the online privacy statement is not available, please read our privacy statement offline:   C:\windows\system32\en-US\erofflps.txt

[MrPeter1985 Guru]

How quick and often does this happen? What OS are you using?