I'd try asking for help with the hardware in dedicated forums here.
https://www.dell.com/community/XPS/bd-p/XPS
--please don't forget to Accept as answer if the reply is helpful--
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Im using my dell xps 13 and my some of my keys are working sporadically (s,d,c,x) ive also recently run into the problem of not being able to use the clicking function on my builtin mousepad i can still click by just touching the mouspad but if i actually press the mousepad it doesnt work.
I'd try asking for help with the hardware in dedicated forums here.
https://www.dell.com/community/XPS/bd-p/XPS
--please don't forget to Accept as answer if the reply is helpful--