Hello, i just recently opened my computer to take my current harddrive out and put another 1 for now, When i switched the hard drives back my computer acts funny, like it would take longer than usuall to load windows. so i let this pass for a week it didnt really bother me and then my computer sometimes restarts by its self and on the boot up it would say no hard drive is in the computer. and when i restart it it would detect the hard drive again. so i opened my computer again took the jumper cables out for 5 minutes and when i put it back in it gets passed the windows splash screen fast like before but it doesnt load the log in part its only a black screen? what should i do im sure my harddrive is jumpered correcty.