nonxcarbonx :
Yes, I've done that but emptying the recycling bin doesn't actually take the files off of a drive; the OS simply makes those files' disk space able to be re-written. However, the file is still essentially still on the disk and slowing things down (that is the reason why programs allow you to recover deleted files so easily, because it isn't gone until it's re-written). How do I "re-write" the file without a program that completely nukes my hard drive and/or w/o an OS re-installation?
-(This message is assuming you have windows) It doesn't matter weather those files are there or not on the hardrive...it like writing on a used sheet of paper, is it going to slow down how fast your hand can physically write...no so your hard drive isn't at fault unless its broken or just plain slow. This has nothing to do with your speed decreases. First and foremost, an operating system generally gets slower (especially a windows OS with NTFS) over time of use, it gets clogged up with services, processes, infections, registry keys, unused files and all that crap, this slows it down so this should be normal. Reinstalling the OS is usuall the best way to get performance back but if you don't want to then here are some steps to cleaning your windows:
-Clean your registry, (use a regcleaner) and delete the hundreds or thousands of unused keys.
-Compact your registr (applications like JV16 can do this), it basically compacts NOT COMPRESSES your registry if there is spaces in it there are aren't filled in and makes it smaller.
-Delete prefetch files, recent files, and temp files
-Defragment your hard drive
-Rewrite directories
-Consolidate free space
-Defragment your Page file
-Defragment your Master file table
-Get rid of any infections (Virus, spyware,adware,malware,worms,trojans,keyloggers...etc)
-Empty recyling bin
-Disable or delete all of those extra processes and services that take up RAM, CPU cycles and slow you down, you can do this with msconfig or services.msc
-IF you have a bloated anti-virus, it can slow you down too.
-Uninstall uneeded software that you don't use.
-Hope this helps. If you are sick of all these windows crap that make it slow, join the linux club but while you are using windows, lots of maintence is required to keep your system healthy.