I have a 4 month old HP laptop with windows vista. All well and good for first 3 months and all incompatibility issues resolved with switching from xp to vista. However I now have a serious problem with it sending a popping noise and then shuts down - usually when starting up.
Then when I try to reboot will only sometimes allow me to press the return key to restart. Sometimes successful. However latterly will just give out loud pop noise and shuts off - when trying to reboot message is then to 'relaunch'.