Hi, When I turned my PC on today, I received a Blue Screen Error. It only lasted for a few seconds, so I wasn't able to see everything. The computer rebooted and when I logged back in I got a message saying Windows rebooted from an error. I'm no good at technical stuff like this but I do know it's a problem - happened 3 times in the past month!! I'm running Windows Vista Home Premium SP1. Here is the info that Windows provided when it rebooted and from what I saw on the BSOD: From what I saw: BAD_POOL_HEADER Windows provided when it rebooted: Problem Event Name: BlueScreen Additional information about the problem: BCCode: 19 BCP1: 00000021 BCP2: 87DB0000 BCP3: 00009B58 BCP4: 00000000 Just before I turned the computer off, it said that something about WinTask still running or something but it quickly disappeared so that's all I saw. Would it be possible for someone to figure out what the cause of my BSOD is with the BCCODE and the BCP1-BCP4 above? Thanks, let me know if you need more info.