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869
August 23rd, 2023 20:47
XPS 13 7390, trouble starting up, freezing with pixelated glitch screen
I just returned home back to my laptop after being with family for a month. My Dell XPS 13 7390 worked like normal to turn on, then once I had an internet browser up and ready to use, the screen turned dark grey and unresponsive even though the laptop was on and charging. After minutes of this, I powered the laptop down. I waited a few minutes then turned it back on. This time, I was met with the Dell power on title screen, but when it would usually go to the user password login screen, it showed flashing colored rectangle pixels covering the screen instead. I tried powering down and on again to the same result before trying troubleshooting on F2 and F12. I could reach the F2 and F12 pages without error, but the screen would freeze and show the pixels again when trying to do a factory reset or running diagnostics, making any action unable to complete. What is wrong and how can I fix this?
ejn63
10 Elder
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29.9K Posts
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August 23rd, 2023 20:55
Hold the D key through powerup -- does the self-test run and appear OK or is it also faulty?
sw101
2 Posts
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August 24th, 2023 13:50
@ejn63 the self-test run works in the beginning steps, then freezes up and pixelates the screen when it reaches the “testing processor in progress” step. Before this step, it also says the battery is reaching the end of its usable life and asks if I want to continue and I clicked “yes.”
ejn63
10 Elder
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29.9K Posts
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August 24th, 2023 14:06
The display self-test shouldn't test the CPU -- just the display itself. The fact that you can get the display to test OK before the other tests begin strongly suggests you have one of a couple of issues.
Check to make sure the system is thoroughly clean inside, and replace the thermal pads that sit between the CPU/GPU and heat slugs. That may reduce the temperature inside the system and solve the problem.
If it doesn't, you're looking at either a failing mainboard, or possibly a failing GPU -- which means it's time to either replace the system board or retire the system in favor of a new one.