I just want to post a quick something. You are MUCH better off purchasing a laptop or any computer online from a reputable store. You will save a lot of money and can usually deal directly with them for immediate issues with your purchase. I ordered 65 laptops last year (for my job, not for my extended family). I ended up going with Dell; but at home I have an HP, an Acer and a Samsung and all are going strong.
OS issues are more user caused than anything else and if you do backups and then do a quick restore when you have a problem you will almost never have any problems. After that it is all hardware. If your laptop seems to heat up a lot, turn on or add a heat alarm. If your laptop takes a long time to start-up, check your login scripts and start-up apps. If it is still having a problem, backup your needed data to an external drive and perform a restore. That process will cover 90% of problems you will have. Everything else is the fun stuff I get paid to fix.
OS issues are more user caused than anything else and if you do backups and then do a quick restore when you have a problem you will almost never have any problems. After that it is all hardware. If your laptop seems to heat up a lot, turn on or add a heat alarm. If your laptop takes a long time to start-up, check your login scripts and start-up apps. If it is still having a problem, backup your needed data to an external drive and perform a restore. That process will cover 90% of problems you will have. Everything else is the fun stuff I get paid to fix.