I am using a laptop with Windows 7 Ultimate 64-bit having intel i7 3rd generation processor, 1TB harddisk, 8 GB RAM, 2GB dedicated graphics from Nvidia which I purchased a few months ago. I thought such high conguration computers would remain fast always but it is not so. I have been using this laptop for quite a time but at that time the maximum time I kept the laptop on was for 3-4 hours. At this time my laptop boot was quick to boot. But suddenly due to my requirements, I have to leave the laptop running for 8-9 hours. Now, I have to wait for longer time to boot. So what is the problem? Also I would like to mention that I have to keep downloading data and so my harddisk has got filled up more than before. So is this the reason? Please help me.