|You didn't address my other response. We need to know your system specs...CPU, motherboard, RAM, HDD, video card, etc.|
As for the HDD, how about listing the total capacity, how you have it partitioned & the amount of free space left in the primary partition? If you're down to 1GB or less, you have (or will have) other problems such as lack of space for the swap file. And if you have other partitions, what are you using them for? Why aren't you installing your programs/games on a separate partition?
And I asked you if you used a Cleaner? If you don't regularly "take out the trash", Windows can get bogged down with 100's or 1000's of MB of internet garbage files, especially if you've never changed the amount of days these files are kept. The default setting is 20 days, I have mine set to 0. The 1st thing you need to do is run a cleaner & use it regularly. Try CCleaner Slim...here's a direct download: