Hello ValentineKills. I understand the computer is slow. I will do my best to assist you!
This can be caused by a hardware failure or software/driver/virus conflict. However, we won't know until troubleshooting is done.
I'm going to provide a few official documents that provide information on how to speed up the computer. I want you to follow all the steps, in all the documents. This way, if the issue exists, it will narrow down the root cause. Here are the documents I want you to try:
http://support.microsoft.com/kb/2746761
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=c03460887
Since you are running Windows 8, I do have an additional suggestion: Complete all Windows updates, then update the computer to Windows 8.1. While the operating system is upgrading, try using the computer and see if the speed is any different.
Please respond when you complete this troubleshooting. I'm only here to help!
Mario