Why does my computer slow down after 30-60 minutes of use? Typing on twitter takes several seconds to show on?

[brentsn]

Lenovo IdeaCentre B3 series All in one,Google Chrome Windows 7. Works fine for 30,60 minutes (sometimes longer) then suddenly slows to where I can't scroll,typing takes several seconds to appear onscreen. Downloading a pic at times takes 20-30 seconds. It used to be immediate! If I reboot , everything is just fine again .....for 30,60 minutes (sometimes longer)....Often on a Twitter DM (only on DM's) my entire message will suddenly disappear before I send it ! I re-write it and its fine !

[UNDISCLOSEDNAME]

Try getting Malwarebytes and doing a virus scan. It's one of the best virus scanner out there, and it's free, so it can't hurt. If that doesn't work, I would recommend defragging your hard drive.

Also, could you list your specs? It could just be a slow computer that can't handle Windows 7.

[?]

You have something loading in the back ground .
The easiest fix would be to back up all files
You don't want to lose and reinstall your system.

[080]

1.sounds like you have spyware, and/or viruses.
2..you may have many things starting up and that can slow down your pc.
3.Just because you click the x to close out the program icon near your clock it does not stop the program from running in the background.
4. You may have 5, 10, 20 starting up at the bottom right of your screen near your clock that can slow your pc down as well. if that's the case you need to uncheck the program in your start-up section.

The only thing that should start up and show near your pc is your antivirus.

I hope his helped.