Putting stuff on the hard disk isn't a factor. Running other programs can be, especially if they use a lot of CPU or do a lot of I/O to disk. That can be programs that you installed yourself or it can be malware you're not aware of. It could even be the registry booster unboosted something. That's why we don't recommend using such programs.
Things to check (I don't have the time now to go into details):
- memory usage
- RAM usage
- disk IO
- programs and services running
And, of course, there's the more hardware-oriented view. Toggle the disk from DMA to PIO and back again in Device Manager (that's easy). Run disc diagnostics.
Also, you can go back to factory settings using Dell system recovery. If there is no hardware issue, the system will be as fast as it was in November. Then be careful with what you add and run and change and the system will stay fast.
I have a Dell Studio 1747 laptop. Processor is Intel Core i7 Q720 @ 1.60GHz. 6GB RAM. 64-bit OS, Windows 7 Home Premium.
I got the computer in November and loaded a bunch of stuff. Hard drive disk space says 283GB of 451GB available.
In the last week or so, I have been noticing that all of my programs are taking longer to open/load. Web pages are loading much slower than they used to.
I wouldn't have worried about the Web pages if that were the only problem, since our ISP is not the more reliable. But since I am also noticing the slowdown with programs loading, I am curious what I can do.
I have the Uniblue Registry Booster, which I run periodically. I am also running AVG Free, once a week I do a full scan. Scheduled defrag is turned on and runs once a week.
Programs that have been slow to open are any in the Microsoft Office Pro 2007 suite (I use Word, Excel and Outlook frequently and they are all running slow) and Photoshop CS4. I know Photoshop is a huge program but when I first installed it, it would open up lightning fast.