Question

as a computer technician, you are troubleshooting a clients computer that is experiencing intermittent crashes and sudden reboots. the client reports that these issues started happening after a recent memory upgrade. you have already confirmed that the new memory modules are compatible with the system and properly installed. what would be the next best step to diagnose the problem?
run a memory diagnostic tool to check for any memory errors.
check the systems power supply for any fluctuations.
check the system for any software bugs.
install a new operating system on the computer.

Explanation:

Since the issues started after memory upgrade and hardware - compatibility and installation are confirmed, checking for memory errors using a memory diagnostic tool is the most logical next step. Power supply fluctuations are less likely to be directly related to the memory upgrade, software bugs may not be the first suspect given the timing related to memory upgrade, and installing a new OS is an extreme and unnecessary first - step.

Answer:

Run a memory diagnostic tool to check for any memory errors.