My dad has a laptop I used to use, which has been working well so far. Recently, he got frequent out-of-memory (RAM) issues - the computer freezes, forcing to restart. It is hard to diagnose, but it might be that 8GB RAM might be too small even for light workload these days.
So, I just checked when it is produced - 2015-10. So it is now 10 years old. While I am wary of producing e-wastes, maybe that was long enough life we got out of it. Perhaps it costs more in electricity than buying a replacement laptop? So, I want to ask - is it time to retire this laptop?
A laptop from 2015 probably has an Intel 4th or 5th gen CPU. If 8 GB of RAM is an issue, then you could upgrade it to 16 GB in theory, provided that it isn’t soldered down. That could keep it going for a bit longer if 8 GB is the only problem that keeps it from daily use. I’d say that 8 GB is about borderline these days. It’s still perfectly fine for basic web browsing but not much more.
Even though RAM prices are in the stratosphere, DDR3 prices aren’t as badly affected, so you could get 16 GB relatively cheaply. I’d look for 2x 8 GB DDR3L-1600 SO-DIMMs. Just ensure that the laptop can accept it.
Upgrading the hard drive to an SSD will make a huge difference for performance as well if that hasn’t been done already. Unfortunately, 2.5" SATA SSDs today are even more of a ripoff than M.2 SSDs at their current elevated prices because they aren’t really being produced anymore. At that point then yeah I agree with the sentiment that putting the money towards a new laptop will go much further.