PC Speed Maximizer is a poor registry cleaner. Even though its design might look professional and the way it functions might seem like it is a legitimate program, one should not get tricked by this first impression. PC Speed Maximizer is only a scam that wants to get money from you. One might notice that their scans are impossibly fast and they display lots of errors on ones PC without good enough explanation. What is even worse, this application detects thousands of errors in a clean PC system.
This software is distributed by bundled installers aka programs installing multiple offers without good enough explanation why you need them. After it is installed, PC Speed Maximizer starts scanning your computer and displays various alerts informing about system malfunction. It promises to fix the problems and enhance your PC performance, all you need to do is to purchase its full version. This is how scammers trick people into spending their money for worthless purchase. Most of these problems detected are not important and sometimes they are not problems at all. Thus we do not recommend using crappy registry cleaners like this.
Do not believe any messages displayed by PC Speed Maximizer and definitely, do not spend your money on a full version of the program. I recommend uninstalling PC Speed Maximizer from PC, and if the uninstaller fails (happens all the time with poor registry cleaners), you should scan your PC with anti-malware programs like spyhunter.