Chosen Solution
my computer shut down suddenly, no warning, then would not turn back on. i replaced the battery and power cord. still wont turn on. why?
If you don’t see brand logo at start, your motherboard or one of your RAM stick or your GPU is potentially dead. Try to test the computer RAM stick first (by testing computer ram stick(s) one by one then start the laptop). Then test the motherboad if it doesn’t work. If there is no reaction when you push the power button your motherboard is dead.
I would try everything @andnerb mentioned and if you get the laptop to post, try running Dell’s internal diagnostic test. It is accessible by hitting F10 after booting bios. This allows you to test each component for failures and helps with troubleshooting problems.
