Do you have another PC that you can connect the SATA HDD to? I think that some malware may have gotten on there. Tell your dad that malware is a virus that bad people put into the internet to try to infect and control someone else's PC with. It's not your fault. And don't use the P-word here.
What Dr. amanat9748 needs is:
1. Windows Desktop PC
2. Open SATA slot inside your PC or USB to SATA adapter.
3. Glary utilities installed.
4. Malwarebytes installed.
Step 1. Install Glary utilities on the desktop. Then, install Malwarebytes. Just Google the names and find the correct websites. Follow the install instructions from there.
Step 2. Find out how to remove the old HDD or SSD from your laptop. Once done, if you have an extra internal SATA slot, power down the PC, find a SATA power cable coming from the power supply and connect that to drive. Then, connect a SATA cable (unplug from DVD drive if necessary, same for the SATA power) to the drive. Then turn on the PC. If you have a SATA to USB adapter, just plug the drive into the adapter then plug the adapter into the PC.
Step 3. As soon as you finish step 2, run Malwarebytes, Windows defender (built into Windows), and glarysoft malware hunter. It should detect any malware on the drive.
This is a good protocol for malware on a drive. Although your drive probably does have malware, it may not be the problem. This can't hurt though, and it's good protection. If it can't find anything, use Glary utilities to do a disk fix/clean up/whatever you think will help.
Hope this helps!
BTW, what model is you laptop?
Step 4: open device manager and right click on the drive from your laptop (will be called recovery, system drive or something like that), and do the following:
I have now made a guide to better illustrate this
How to remove malware from an infected windows PC