Computer Hardware
You have a system that periodically locks up. You have ruled out software, and now suspect that it is hardware. What should you do first that could help you narrow it down to the component at fault?

replace the RAM
rotate the RAM
replace the level 2 cache SIMM
disable the CPU cache in CMOS
replace the CPU

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Computer Hardware
You run a super wing-ding diagnostic program on your PC, and it reports that your hard drive, microprocessor, RAM, and video card have seen better days. To resolve this problem you should:

check to see if you have a software problem
replace each part one at a time, rerunning the diagnostic before replacing the next part.
get another copy of the diagnostic program
run an exhaustive memory check
replace everything at once and rerun the diagnostic

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