looking for a good laptop repair center in CMB - Spilled coke on laptop, got it cleaned & repaired but now it’s freezing time to time n won’t turn on

A little over a week ago, I accidentally spilled Coke on one side of my laptop keyboard. I panicked and immediately took it to a repair center which is famous in TikTok also. They did a basic checkup, told me everything was fine, and said they cleaned it. They also warned me that the keyboard might have issues later, but otherwise, they didn’t find anything wrong.

At first, everything seemed fine—no keyboard issues, no noticeable problems. But after a few days, my laptop started heating up really fast and freezing every 20 minutes. I thought maybe it was a storage issue, so I tried resetting it and deleting all my data, but the issue still continued.

I took it back to the same repair center, and they did another basic checkup, but again, they said they didn’t find any issues. Now they’re telling me I might have to replace the processor or motherboard, which sounds like a huge expense.

Does anyone know what could be causing this? Or if there’s anything else I can do before spending a ton on repairs? I live near Kelaniya, Colombo—does anyone know a good place to get my laptop properly checked? I really need it for work/studies, and it’s not even a year old. I can’t ask my parents for another one. 😭 It cost me around 3 lakhs and I’m freaking out.

Any help would be really appreciated!