Problem signature: Problem Event Name: BlueScreen OS Version: 6.1.7600.2.0.0.768.3 Locale ID: 3081 Additional information about the problem: BCCode: f4 BCP1: 0000000000000003 BCP2: FFFFFA8007A135F0 BCP3: FFFFFA8007A138D0 BCP4: FFFFF80003383300 OS Version: 6_1_7600 Service Pack: 0_0 Product: 768_1 I have formatted the laptop sevaral times and have updated all drivers. There are virtually no programs other than those installed by the manufacturer. I have sent the PC to the manufacturer, however they, returned it stating that no hardware issues have been found. I was wondering if this is a hardware or software issue ? What is the problem and how can it be fixed ? I have attached the dump file. Thanks in advance !