So I restarted my computer, as I do every week or so. Once it booted up this time, it began running very slowly. Opening a Windows Explorer window has a laggy effect. Moving a window has a very laggy effect. Opening a browser window took an extra few seconds. Typing this sentence has a half-second lag--or even more when I'm typing faster. Clicking and scrolling also have that half-second lag, but moving the mouse is fine after startup finishes.
Trying to run Metal Gear Solid V (which normally runs at around 35 fps for me) ran at 1 fps and didn't actually get to the title screen before I gave up waiting.
What could possibly be going on here?
- Windows 7 Home Premium 64-bit SP1 on a 128 GB SSD
- 3.4 GHz Intel Core i7 processor
- 8 GB RAM
- Nvidia GeForce GTX 550 Ti graphics card
The CPU usage is at normal levels. The Power Options indicate the maximum processor state is 100%. (The minimum is 5%, and the system cooling policy is set to Active.) Nothing here was changed.
Both Malwarebytes and SUPERAntiSpyware found no viruses on any of the drives.
All temperatures are at acceptable and normal levels: below 40°C (and 67°C for the graphics card).
All hard drives have plenty of extra space on them.
Check Disk results in no problems.
There were no recent Windows Updates.
There were no recent questionable downloads. (Just a few pictures here and there.)
Hard Disk Sentinel states that all drives are 100% healthy.
I didn't change any settings in the BIOS or in Windows. Besides playing games, browsing the Internet, and programming via an SSH connection, the only things I did differently was recently move and copy a bunch of files to an external drive and use Unlocker to delete a font file that failed to install.
(It's a legitimate font for a program I bought years ago. I tried installing the font, and it seemed to work. I didn't care anyway, so I tried deleting it along with the program. However, the file was still locked by the system, so I had to use Unlocker. It didn't quite work, so I rebooted to find that it finally disappeared.)
The only other thing I can think of is that I tried extracting a large archived file on another drive, but it failed because the C:\ drive didn't have enough space on it (that's three times on three different computers where I experienced this stupid issue), so I cancelled it, and the space was freed up again. The computer worked fine for the few hours after this before the reboot.
Thanks for the help.