My computer suddenly works very slow. What could be the reason and how can I resolve this issue?

It was working fine till a few days ago. But now programs such as Microsoft Word, Excel, or Internet take 1-2 minutes to open. Adobe Photoshop takes too long. I have Kaspersky and when I scanned my computer, it detected "trojan" and I deleted it. I don't know much about computer, but I tried my best cleaning my computer by doing "disc defragment" and "disc cleanup".

My computer is still super slow. Kaspersky shows that my computer is protected and not detecting any more virus, but what do I need to do?

Can someone help me please?

As I said, I don't know much about the computer, so if you can give me a step-by-step instruction, that would be really appreciated.

Thank you very much.

P.S. I have Windows 7 and I still have a lot of memory space left.My computer suddenly works very slow. What could be the reason and how can I resolve this issue?
Your best bet is to take it to a computer technician who can clean your system.
get windows 7 ULTIMATEMy computer suddenly works very slow. What could be the reason and how can I resolve this issue?
Open up Task Manager to see what is using the most memory. You might have installed some stuff you were not aware of ("free" toolbars, etc).
if you are using genuine windows 7 then better to install M.S.Security Essientials from windows.

kaspersky slows the computer...

uninstall unwanted programs...My computer suddenly works very slow. What could be the reason and how can I resolve this issue?
I have had the same problem and I also have windows 7. Im almost positive that it is a virus in ur computor.

What to do:....Be patient enough to go to ur search ingine and type in avg antivirus. Download that antivirus and it will install in ur computor. It will offer u 30 days trial on it to try it out and see how it does for u b4 buying it.

Once u have downloaded it and its installed on ur computor run a scan (full scan). That might take up to an hour to run a full scan on ur computor but it will detect every virus on ur computor. After it does that u will have the option to delete the virus`s off ur computor and do that.

The antivirus is a very good anti virus and once u have done wat I said it should take care of the problem. It will also give u the option to delete all the cookies, history and the space taken up that is wasted.

After doing all of this, it might take a little over an hour but I can assure u the problem will be fixed !
use "CCleaner" to clean junk files and registry it will help to increase the speed of your pc

use less icons of desktop

disable unwanted start up from msconfig

make sure your antivirus is up to date.
you need know what is causing your computer to be slow

Cause #1: Your computer’s Windows registry stores information about the its configuration like a database. Installing and uninstalling software will make your registry a mess, keeping your computer running slow and causing computer crashes.



The registry size keeps growing when you use Windows. When the registry becomes very large, your computer’s performance will be slow and unstable. Some computer users even spend a lot of time trying to edit the registry manually. This can be a risky and laborious task.



Cause #2: After long-term use of a computer, the downloading of a large number of music, videos and movies from the Internet may result in your computer running slow. Its just like when your room becomes a mess without cleaning; our computer will be filled with a mass of junk files or duplicate files after a long operation too. These useless files use up some of the storage space of your hard drive as the “junk” accumulates.



Cause #3: When you surf the internet, some malicious plug-ins may automatically be installed in the computer through security loopholes in the system. These malicious plug-ins may change your system registry entries causing many different kinds of errors or problems in your PC.



Cause #4: The incorrect and incomplete un-installation or deletion of some files or applications may feed your system registry with invalid registry information. You might have unsuccessfully uninstalled certain applications or not used the “Add or Remove Programs” on “Control Panel”, or maybe certain objects or files have been moved inappropriately. These unknown or misplaced files can have a lot to do with “why is my computer running slow”. And it maybe that you see the start up process of your computer is much slower than before also.



How to increase computer speed? Your best, safest and fastest method of seeing what is causing your computer to be slow is to check out this slow computer fixer Click Here! http://toptenantispyware.com/RegComputer… Try the FREE scan and see the problems hiding in your slow computer.
Your computer might be suffering from different problems to improve its performance you should:



%26gt;%26gt; Scan your computer with an antivirus

%26gt;%26gt; Apply De-fragmentation on your system

%26gt;%26gt; Delete all temporary files

%26gt;%26gt; Run disc clean up

%26gt;%26gt; Run Reginout scan.
For running slow there are many causes:

Microsoft Registry Problems

RAM

De-Fragmenting

Etc.



Clean windows registry can speed up the computer. http://tpdownload.net the steps for you.

1. Go to safe mode with internet

2. download a registry cleaner

3. scan and clean the registry errors.
Every Microsoft Windows operating system has a registry. Your system registry holds a wealth of information about your computer, which is why we constantly hear from users that after using their PC for a short length of time, it no longer works the way it used to. This is due in part to invalid entries that exist in your system registry, that might exist because of software you are no longer using or software that was not properly removed. By removing these invalid entries, you can significantly increase the performance of your PC. Registry Easy will scan and repair your registry. Believe me though if you want a quick step up in computer performance this is a must. The registry must be cleaned to make a computer run faster.

You can go to : http://bestcleanerrewiews.com can help you!
%26gt;%26gt; De-fragment the disks

%26gt;%26gt; De-fragment your registry

%26gt;%26gt; Set up the system for best performance

%26gt;%26gt; Disinfect the system

%26gt;%26gt; Speed Up Computer through Reginout