The answers to these questions are as important as the baseline specs of the system, especially if you’re trying to save money. If the machine is smooth and responsive in Safe Mode but lags badly when booted to a normal desktop, check and see what applications automatically start when you boot up Windows 10. The answers to these questions will help you understand where the problem is likely to be. Is the system just slow, or is it also unstable? If it crashes, is there a specific application or application(s) that makes this happen reliably?.
Does the system begin to run slowly after a few minutes of work or gaming, or is it slow from boot?.Does the machine feel sluggish and slow to respond to feedback like typing? Does it have this problem in all cases, or only when certain programs are running? Does it have the same lag if booted in Safe Mode?.