What Could Be Causing My Laptop to Lag for Everything?

JodySchmidt2013

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Basic Specs:

2010 Asus Laptop

124 GB free of 283 GB
0% disk fragmentation
2.2 GHz Dual Core Pentium CPU
3 GB of RAM
64 Bit Operating System
50-65% RAM usage, on average, per the Task Manager

Open Programs (currently, as a good example):
MS Office (Word, Excel)
Adobe Acrobat Reader (15 documents)
MS Notepad (3 notepad files)
Windows Photo Viewer (3 images)
Firefox (3 tabs [Gmail, CNN.com and this forum])
AND THATS IT

Yet everything lags, especially if I haven't clicked on an app for a while. Then, it will take 15-20 seconds of the mouse pointer spinning and the app not responding before anything happens. For example, if I am using the web browser for some time, and then click over to view a PDF file, it will lag bad for around 15 seconds before the taskbar displays the open Acrobat files to select from, and then, once selected, the Acrobat document will appear piecemeal on the screen and, even then, scrolling will be very staggered for another 30 seconds or so, till it finally settles into some degree of useful smoothness. If I restore another Acrobat document at this time, there is less lag since, I guess, system resources are for the moment devoted to Adobe from the first laggy document restore.

MS Excel? If I havent clicked on it for a while and then click on it, there will be 15-20 secs of lag before the spreadsheet pops up on screen. Clicking to save an image? Big lag calling up the Save As window. In general, the lag is most pronounced when switching from one app to another. But, look at what I have open. These are not processing-intensive apps. They shouldn't consume all computer resources when used.

This happens every single time, with every app. What could be causing it? Thanks in advance for any and all suggestions!
 

My Computer My Computer

At a glance

Windows 7 64 bit2.2 GHz Dual-Core Pentium3 GB RAM
Computer type
Laptop
Computer Manufacturer/Model Number
Asus
OS
Windows 7 64 bit
CPU
2.2 GHz Dual-Core Pentium
Memory
3 GB RAM
Hard Drives
283 GB Hard Drive Space
Browser
Mozilla Firefox
It could be numerous things, malware and virus's being a common one, more ram could be helpful in terms of speed but your currect specs should be fine to do what you are currently doing.
 

My Computer My Computer

At a glance

Windows 7 Home Premium 64BitAMD A6-3420M 1.5GHZ OC - 2.0GHZ4GB DDR3 1600MHZAMD RADEON 6520G+AMD RADEON HD7470M 1GB DDR3
Computer type
Laptop
Computer Manufacturer/Model Number
Packard Bell
OS
Windows 7 Home Premium 64Bit
CPU
AMD A6-3420M 1.5GHZ OC - 2.0GHZ
Memory
4GB DDR3 1600MHZ
Graphics Card(s)
AMD RADEON 6520G+AMD RADEON HD7470M 1GB DDR3
Screen Resolution
1366x768
Hard Drives
500GB SATA
Internet Speed
18Mb Unlimited
Antivirus
AVAST!
Browser
MOZILLA FIREFOX
A bad hard disk can cause lag too, check its health status with crystal diskinfo.
 

My Computer My Computer

At a glance

Microsoft Windows 10 Professional / Windows 7...Intel i5-357016GB DDR3AMD Radeon HD 7850 2GB
Computer type
PC/Desktop
OS
Microsoft Windows 10 Professional / Windows 7 Professional
CPU
Intel i5-3570
Motherboard
Lenovo Mahobay
Memory
16GB DDR3
Graphics Card(s)
AMD Radeon HD 7850 2GB
Sound Card
(1) Realtek HD Audio (2) AMD HD Audio
Monitor(s) Displays
LG LS192WS
Screen Resolution
1440 x 900 @ 32bit color
Hard Drives
(1) SUV300S37A/120G (2) ST3500413AS SATA Disk Device AHCI mode enabled.
PSU
Corsair HX620
Case
Thermaltake V4 Black Edition
Cooling
Cooler Master Hyper 212 + Artic Silver 5 on CPU/GPU
Keyboard
Dell SK-8115
Mouse
Razer Copperhead with MAPED mat (awesome!)
Internet Speed
100 Mbps up/down
Browser
Chrome
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