Slow computer after factory reset

[Gamerear21]

A few weeks ago I had to reinstall windows with the recovery discs I got through HP because of a virus. After doing the factory reset and installing my drivers with the driver disc and updating windows to the latest, I noticed my computer was a little slower than it used to be. When I opened up internet explorer 10 ( won't use 11 because of the issues it has) it took 30 seconds to load my home page which is google.  I have no idea what else to do to improve this. The stuff I tried knocked it down to 25 seconds but still that's really slow compared to my desktop that loads everything instantly. I kind of think its the AMD processor because my desktop has intel core I7 920 and it has the same stuff as the laptop ( excluding hardware of course) and it works way faster.

Things I tried to fix this:

1. Power cycle my modem and router (even though my other computers didn't have this issue)

2. Disabled uneeded startup programs

3. Disabled uneeded addons for IE ( only onces that run now are flash, java, and microsoft built in addons)

4. Updated all drivers and windows

5. Ran maintaince utilitys ( error checker, disk cleanup, disk defrag, registry cleanup)

6. Reseting IE settings and deleting history

Computer Specs:

HP G61-429WM

Windows 7 64-bit

AMD Sempron M160

4 GB Ram

320 GB hard drive ( only 30 GB used)

[SuperMario1]

Gamerear21. I understand your Windows is slow after reinstalling the operating system, due to a virus. I will do my best to assist you!. I've seen this happen many times during my years of experiencing with computers. Typically, another attempt at reinstalling the operating system will resolve the issue.

If it does not resolve the issue, you can research methods to optimizing Windows for better performance.

Please respond after you have tried this troubleshooting. Thanks for posting on the HP Forums. Have a great day!

Mario
 

[Gamerear21]

I tried both things and it's still a little slower than it used to be. I did notice that before reinstalling all of windows updates my computer was really fast and after updating windows the speed slowed down. My main issues though seems to be the speed that my internet explorer browser opening. While other things on the computer are slightly slower than before the browser seems to be far worse than before the virus infection.  I was told by others on here that when I did a factory reset with my recovery discs I got through HP that it would reformat my entire hard drive and reinstall the recovery partitions so is this true? If not is it possible the virus is still on there?

[SuperMario1]

Unfortunately, some viruses cannot be eliminated by reinstalling Windows. Some viruses go as far as the Master Boot Record, or contaminate the hardware. I would clear the Master Boot Record. This manual provides more information on the Master Boot Record.

If the issue is not resolved, I would contact HP technical support for further assistance.

Mario