Programs take a very long time to open
I'm having a problem. A very frustrating one. Almost all of my programs take an incredibly long time to open. Startups are very slow too.
It all started less than a week ago. Pretty suddenly I've just noticed programs take simply too long to open, although I can do everything else along with it, without anything being interrupted. Metaphorically, it's like I've lit a fuse to open one program and then returned to my desk to continue with the rest of the work. The delay can sometimes be larger than 5 minutes. And, when opening programs, my hard disk almost always buzzes, but there's no unusual sounds like scratching; it sounds like there's a scan in progress or something*. Here's what I have done:
- Updated NOD32 and ran a scan, found nothing.
- Ad-Aware ran a scan too, found nothing
- Spybot Search & Destroy found some minor threats - "Microsoft.Windows.App.FirewallBypass" was the most 'serious' one of them
- Scanned my registry with Registry Mechanic and TuneUp Registry Cleaner
- Ran disk cleanup and CCleaner
- Defragmented (there's something quite interesting: Windows Defragmenter continuously recommends defragmentation after running the analysis, even when the defragmentation had been completed.)
- Ran a disk check of the C: drive and everything seemed alright (didn't touch D: though)
- Adjusted startup programs
Windows XP, Service Pack 2
Intel Pentium D 3.0 GHz
2 GB of RAM
Total size: 10,3 GB
Free space: 1,55 GB
Total size: 138 GB
Free space: 22,2 GB
Do you know what could be causing this? Because it is utterly unbearable.
*The hard drive makes a two-tone buzz that alternates, with the hard drive indicator light constantly on.