BSOD only on cold boot and only with SP1 View attachment Seven Forums.zip I built this 9 months ago and started having bsod on cold boot, i found that the TP Link wireless software was not compatible with W7. As I had about 20 bsod's, all random drivers, I did a fresh install. After installing mobo and graphics drivers and MS updates I ran mtest for 18 hours, no errors found, ran sisoft, no errors, checkdisk and seatools, driver verifier, no errors. This machine ran well for 7 months, bsod's started again 6 weeks ago on cold boot, crash dumps showed random W7 drivers, W7 processes being cause, after many hours investigation and testing, cause could not be determined, sfc showed numerous file corruptions, some could not be fixed so I have re-installed afresh. Yesterday I updated all onboard drivers and W7 updates. I turned on today and had 3 crashes on startup, after 3 bsod I loaded in safe mode then re-started and W7 loaded. All 3 dumps this time are constant, previously they where random. I need help to isolate the issue. Regards Dave.