Okay, so I was trying to 'tweak' my laptop (HP DV7-1130us) which was recently upgraded to windows 7 home premium. I went into System Properties > Advanced > Performance > Advanced > Virtual Memory There, stupidly, I tried to maximize my memory speed and set a custom paging allocation of Minimum 4,096 and maximum 4,096 (my ram is 4 GBs, but only 2.75 usable...) I set it, and restarted. Now I get a blue screen after the Windows Starting loading screen. I ran startup repair, and even let it restore my pc to an earlier point, which did not work. I can boot the PC in safe mode. Please help me.