Why is my computer still slow?

what you have done has nothing to do with the issue.

1st thing, because you have so many hard shut downs. open the start menu and then 'Computer' folder. right click on each hard drive, select properties, tools, Error checking, select 'Check now' and check the box 'Automatically fix the file system errors'

it may say 'schedule scan' if it does, schedule it and then restart the computer for it to scan, let it complete.

2, you need to update windows, it's in the start menu, all programs, windows update. install all the updates and then restart, scan again for updates and install untill there are none remaining.

3, windows will isntall default drivers for everything, you will need to download and install the latest drivers for your motherboard and graphics card.

Speccy

https://www.piriform.com/speccy

you can use speccy to find out make/model of motherboard and graphics card you have, go to the manufacturers website, find the page for the part and click on support (for graphics card, you just click on support and use the selection menu).

download all the motherboard drivers that are there, and the latest for the graphics card, install.

once that is done

Auslogics disk defrag

http://www.auslogics.com/en/software/disk-defrag/

defrag and optimize the HDD.

if your system does not meet the requirements for windows 7, especially the reccomended amount of RAM (4GB) then you'll have to add more RAM, but if the other components fall short there isnt much you can do.

Most likely, you are still infected. Your best option is to back up your data and perform a factory restore. Failing that:

The most reliable way of removing malware: by Tumbleweed_Biff@yahoo.com

The best way to remove viruses from your computer is to boot from something other that your hard

disk. Fortunately, most AV producers provide what is called a Rescue Disk. This is a boot-able CD/DVD or flash drive. On a *clean* computer, download at least one of these programs, preferably two of them. (No AV program gets everything but not many can get past two reputable scanners.) Make the boot-able disk or flash drive, boot the computer with it. Now this image was made a while ago so you will want to update after you boot. Once it has updated set it to work scanning your computer. See the explanation of why this is the case below.

Separate from the others I will offer to you is Kaspersky's TDSSKiller. Not an actual Rescue Disk by itself, it is at the very top of the list of root-kit finders/eliminators. You should run this in addition to at least one of the others:

http://usa.kaspersky.com/downloads/TDSSKiller

Here are 4 of the many free Rescue Disks available:

http://support.kaspersky.com/us/viruses/rescuedisk...

http://www.bitdefender.com/support/how-to-create-a...

https://www.zonealarm.com/forums/showthread.php/72...

http://www.lavasoft.com/mylavasoft/support/support...

One of the most difficult things about viruses is once you get one it is difficult to be sure you got rid of all of it/them. Resident programs are pretty effective at blocking initial infection if kept updated, but not so good at removing all of the viruses, especially the worst ones – root-kits.

Think of the entire computer with all the software as a walled city with one outer wall – the rest of the world outside, the computer and the software inside – and then a series of inner walls with fewer and fewer people allowed within the next layer towards the castle in the middle. It is the center wall within which all the power of the kingdom resides. On a computer, in the middle, we have the kernel or heart of the operating system which talks directly with the hardware such as the CPU, motherboard, RAM, etc. Anything that wants to access any of the computer's hardware must go through the OS to get there. In the layers going out, each layer has increasingly less security to go through (and less authority) so that on the very outside where the applications are, there isn't a lot of security or authority to change things on the computer.

Most viruses operate in the outer layers which makes it relatively simple to find, identify and remove. Malware performs various tricks in order to get access to the inner layers. There are, however, some viruses which manage to get access to the kernel level. These are called “Root Kit” viruses. Root is a reference to the center layer. In the Linux and Unix world, a root user has the keys to the kingdom and full control of everything on the machine. With Windows, of course, we don't have a root, we have administrators who actually have a little less authority than Root on Linux/Unix.

The Root-Kits are able to get themselves launched at the same time as the kernel, sometimes as part of the kernel. This happens well before any security software on the machine is launched. As a result, these root-kits have time to hide themselves and even hide other viruses from the security systems/software of the computer. The only reliable way to find them is to perform a virus search before the virus launches which means before the Kernel of the OS launches. By using something other than your hard drive to boot from you have full access to everything on the machine and nothing has time to hide because they never launch.

Clean up your pc by taking following steps.

Scan and fix registry redundancy and errors.

Scan and fix plug-in affected with Internet Explorer.

Scan and fix potential security backdoors.

Repair corrupt registry.

Repair registry key value infected by virus.

Repair crashed MBR even it is infected with virus.

You can do all the above steps by using system optimizer which will remove all useless stuff to give you maximum performance.

I generally will rebuild my system with a clean OS install once every couple of years. As long as you are not having hardware problems, this will be guaranteed to make your system run like it did when you first got it. If you decide to go this route, don't forget to backup all the stuff you care about first.

reinstall your windows and after installation scan for viruses first ...if it's clean then there could be something wrong with your hardware...try avast or avg

1. It could be because your computer has very small memory.

2. It could be because your computer is overloaded with too many programmes and applications.

3. It could be because you have too many icons on your screen.

It can be computer configuration problem or Hard disk slow problem.