So I was working on my friends laptop to remove some malware and viruses. After completing the work, he wasn't able to connect to his wifi. So, I took it back and reinstalled the drivers which resolved the issue. After I did that though, he started to get bad horizontal video tearing that freezes the computer until its restarted. After restarts, it can take anywhere from a few minutes to 8 hours for the tearing to occur again. I have attached an image of the tearing.
What do you guys think? Is it more likely hardware or software? I would assume hardware, which means either I replace the motherboard or just recommend he get a new laptop.
If it is software, what might it be? I have installed all up to date drivers manually from the manufacturers website after installing a clean copy of Windows 7 Home Premium.
It is an Asus A53E
I've been working on this computer for days and its really got me stumped lol.
Thank you for any assistance!