My HP Pavilion dv2000 laptop running Vista is crashing every time on start up. It has always taken a while to get past the login screen and the screen goes black for a while but eventually it has loaded and worked. Now sometimes it doesn't load at all. When it does load, clicking anything makes it crash. Totally locks up and you can't do anything about it. If I click the start menu, it appears transparent and theres nothing there, and the Laptop crashes again. I've managed to get it running in safe mode and disabled a few programs at startup but i've no idea what to do now as the problem still exists. I've not installed any hardware recently, although a few days ago I installed Steam but have used it fine for a couple of days.