My current laptop is just over 6 years old. The keyboard had some issues about a year ago from built up dirt. I pulled off every key and cleaned as best I could. Still did not quite fix the problem. I decided to replace the keyboard. The replacement keyboard is horrible. It is probably worse than the old keyboard. This is the main reason I want to replace it.
I primarily use mine for surfing the internet and some minor office type work with Word and Excel.
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My 3 yr old Toshiba (i7+8gb) has broken hinge (pretty bad - I cannot close the lid or move it), so I got a keyboard (new), mouse (new) and a monitor ($20) from Craigslist.
If your laptop cannot play a 720p youtube video without hiccups, then you should probably get a replacement.
1. Consider refurbished Business grade laptops
https://h41369.www4.hp.com/pps-offers.phpMy first laptop from Hp bought in 2004 is still running Windows xp. I dont use it anymore but it is still working. Like everything, you got to ask the representative to give you some offers. For me when i bought the laptop in 2004 for $470, they throwed a docking station, and 3 year international warranty at no cost. If I bought the same laptop new with the perks, it would have costed me $1200 (my room mates were dealing with $1000 home grade laptops). You have to sort, watch, call couple times as the online vs stock will be different.
Intel celeron is good enough if you do not plan on heavy video games.
https://www.walmart.com/browse/shop-laptops-by-type/refurbished-laptops/3944_3951_1089430_1230091_12300922. Do not upgrade SSD/RAM if the computer is old enough -- I had components, so swapped, but eventually it will be lagging.
Like everything, electronics do age. So finding SSD and increasing RAM and loading different OS you arent familiar may not worth the effort.
Usually people score very decent laptop (i5 4th gen and above) around $200 from Bestbuy floor/open piece. All you got to do is ask the manager to work on the price, they will be happy to do so. Just dont go during their peak time. I once scored JBL woofer for $125 (original price 350, was on sale for $175 due to open box, then I got it for $125) but returned it since it was huge for my little apartment and got an Yamaha new when on sale for $100.
3. If you are okay to sacrifice your comfort and want to try, just boot with a usb loaded with Ubuntu or any kind of that flavor. But the word, excel will not feel the same as Windows.
4. If you arent on move much, consider Intel NUC. Footage similar to Hard disk, performance in decent range. I got one for gifting to my brother. The electricity it uses is very low (19W peak). I scored a decent i5 from ebay for $240 for complete package (refurb/used).