Some of the prior posts about getting more ram, defragmenting and not overfilling  
  
your drive are very appropriate. I have found that not going beyond 90% is a  
  
good rule of thumb unless you use one of the top rated defragmenmtors —in  
  
which case you can get away with going up to 98%. I don't recommend it but  
  
I'm the kind of person that likes to test the limits of things and I've done  
  
it successfully. 
  
Having said that, I have a little routine I do to keep my systems humming  
  
along because no matter how much ram; how big your drive and so on, proper  
  
and periodic maintenance helps tremendously: 
  
When your laptop starts slowing noticeably: 
  
1. Ensure the Hard Disc Drive is not damaged or faulty by running CheckDisk: 
  
a. Start> Computer >select C Drive>Right Click C Drive>select  
  
"Properties">"Tools" > click "Check Now"> Select both boxes and click  
  
"Start". 
  
b. This can take a long time, so let it complete (may take all night or  
  
longer. Be patient.) 
  
2. Ensure your PC has as much memory (RAM) as possible. 
  
a. Use the RAM Configurator linked to below to see what RAM your PC uses and  
  
the max it will support. 
b. Get the maximum amount of memory your computer can hold and install it  
  
(the configurator has directions on how to install it). 
  
RAM Config: http://www.crucial.com/?cpe=pd_msn_u...110707180520:s 
  
3. Ensure the PC is protected 
  
a. Ensure your OS updates are current —many OS updates are targeted at  
  
neutralizing mal-ware so this is very important. 
  
b. As an added protection update your existing Anti-Malware software or  
  
install some if you currently have none. 
  
c. Set your existing Anti-Virus program to run regularly and ensure it stays  
  
updated. 
  
d. Open, update and run the Anti-Spyware program. 
  
e. If no Anti-Virus or Anti-Spyware, acquire these (If you acquire a second  
  
Anti-Virus program always remove any existing AV prior to installing the  
  
replacement) 
  
Here are some sources for Anti-Malware and Anti-Virus programs if needed: 
  
MalWare Bytes: http://download.cnet.com/Malwarebyte...-10804572.html 
SuperAntiSpyware: http://download.cnet.com/SuperAntiSp...-10523889.html 
AVG AntiVirus: http://download.cnet.com/AVG-Anti-Vi...-10320142.html 
  
4. Remove Malware from your computer at this time by running the Anti-Virus  
  
and Anti Spyware (this can take a while if it's never been done before so be  
  
patient). Follow the recommendations of the programs to effectively deal  
  
with any mal-ware found.  
  
5. Ensure the Registry is clean by running a good registry cleaner. 
a. Check to see if there is a registry cleaner already on the system; 
b. if none, get CCleaner here: http://download.cnet.com/ccleaner/ 
c. Run the Registry cleaner till it finds and corrects all errors. 
d. Run the "Cleaner" to analyze the disk and see what it finds to delete and  
  
then delete the files that are not needed (most of the files it finds are  
  
unneeded, but carefully look through the categories to be safe). 
e. In CCleaner, under "Tools", go to "Start Up" and look over the programs  
  
that start up on your PC. You may see a lot of programs that simply do not  
  
need to start up when you first boot up your PC. Disable these and leave  
  
only the essential ones (if not sure, note down the program name and then  
  
try to open it up via Start-> All Programs. If not essential, disable them).  
  
Unnecessary programs running are big "RAM Eaters" and many times are not  
  
needed at start up -- if you do need to use them, consider starting them up  
  
as needed. 
  
6. Defragment the drive. Some OS's have built in defragmenters. You can use  
  
these if you must but If you can spring  a few dollars for the top rated  
  
product consider doing so to save you a lot of grief: 
take a look at what the best defragmentors offer and you'll begin to  
  
understand why: 
  
http://disk-defragmenter-software-review.toptenreviews.com/ 
  
In a nutshell, the best ones not only run automatically and prevent  
  
fragmentation, but they are more thorough when completing the task. I've had  
  
cheap/freebie defrags tell me my drive was fine only to have it crash on me  
  
a few days or weeks later due to severe fragmentation not being caught. I  
  
can't tell you how much time this has cost me over the years. My time vs  
  
$39.00 for the best product out there? It's obvious which way 'm going to  
  
go. The top rated defragmentor won because it was undetectable during defrag  
  
while the PC was being used (with programs running in the background) and it  
  
also prevents most fragmentation before it occurs. My time is money so this  
  
make sense to me. 
  
Running as much RAM as your system can bear plus keeping your drive as  
  
defragmented as possible are the 2 simplest and least time consuming ways of  
  
adding and maintaining speed. 
  
Installing the RAM is a one time event. Getting a good defragmentor and  
  
running it can also be a one time event if you get the right one. Check out  
  
the review for all the details and get a free trial of whichever one appeals  
  
to you so you can see what it does on your system. 
  
Hope this helps! 
  
Cheers! 
  
Grateful acknowledgement to those who've helped me compile this "speed  
  
formula" notably Bill R.