I have been getting several BSODs. After using "Whocrashed", here is the analysis. The first time I got it, it was when I started up my computer. It was a BSOD 0xA, Driver IRQL Not Or Less Equal Parameter 1: 0x0 Parameter 2: 0x2 Parameter 3: 0x0 Parameter 4: 0XFFFFF800002E9AF74 Probably caused by ntoskrnl.exe The second time; I left it overnight and when I returned to it, it said 'windows had recovered from an unexpected shutdown.' It was a BSOD 0X9F and 0X1000009F Parameter 1: 0x4 Parameter 2: 0x258 Parameter 3: 0xFFFFFA8004EE0660 Parameter 4: 0xFFFFF80000BA2740 Is it because I sometimes leave my laptop on overnight? I DO NOT run any demanding programs. I use my laptop for surfing net, school work, facebook, gmail, blogger, twitter, youtube, and listening to music on itunes. Thank you for your help.