@ dahernandez,
To add to JR67 recommendation regarding looking for Rootkit`s, please do the following download the Avira rescue system from here and burn the CD then boot the PC using the disc.
(Remember this in Linux and not a windows application).
Once done reboot into normal windows and download Malwarebytes' Anti-Malware from here.
Running instructions.
1. Double-click mbam-setup.exe and follow the prompts to install the program.
2. At the end, be sure a checkmark is placed next to Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware, then click Finish.
If an update is found, it will download and install the latest version.
3. Once the program has loaded, select Perform quick scan, then click Scan.
4. When the scan is complete, click OK, then Show Results to view the results.
Be sure that everything is checked, and click Remove Selected.
5.When completed, a log will open in Notepad. Please save it to a convenient location.
Now follow these instructions regarding uninstalling Avira and cleaning your registry the reinstalling.
Please post back results Blackligh Rootkit search and well as the Malwarebytes scan log.
Regards
Barrie