Missing files from PC every day

Convel said: ↑

All is fine in the sense that your computer most likely just needs some inexpensive maintenance to run optimally. The lag you're experiencing sounds like a symptom of thermal throttling; your computer automatically decreases performance to prevent itself from overheating. This is not a sign of hardware failure as silicone-based thermal compound will dry out over time, which affects its ability to transfer heat. If a computer is left regularly doing taxing work with inadequate cooling, however, it may have its lifespan shortened.

Try reading up on how to repaste your GPU and CPU. If you don't feel comfortable doing it on your own, take it to a local repair shop or tech-savy relative should you have one. Even if you're short on money, I echo the advice of having the HDD replaced as it's very likely to fail soon. Your notebook is being serviced anyway, and replacing an exposed hardrive is done within seconds. Only continue using your current HDD if you're 100% comfortable losing data that's not backed up and don't mind experiencing some downtime when your computer eventually becomes unstable or fails to boot.

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The lag was because the agme changed my options to Auto which increased the Anti-Aliasing level and from there was the lag, now there is no lag. Also I have cooler pad (not my laptop's size but adjusting it right so the fan wind goes right to my CPU and decreases like 5-10C more), thinking about changing it but the current one is still holding it up pretty well.

Coverdrave Notebook Geek