Computer has a built in LCD self test mode, which can be triggered by holding D + Power button. In your case its getting trigger without doing it. There can be several issues.
Bad Keyboard
Motherboard Firmware bug.
Hold the power button down for 30 seconds after disconnecting power cable.
Try powering on.
Step 1 one more time and this time try accessing F12 or F2 menu, if you can access F12 menu, you can choose SupportAssist OS recovery to access repair options
You'll need to take the system to a computer repair shop, then -- some will do a free diagnosis. Be wary of any that charge for an estimate -- just one hour's diagnosis will likely cost you twice the value of your system, and it's very likely you'll end up needing a mainboard -- which frankly is not worth the cost on a system that is this old.
You're better off shopping for a new system at this point.
ejn63
10 Elder
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30.7K Posts
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June 2nd, 2022 07:00
Run a screen self-test -- hold the D key while powering up.
Do the test screens show the same fault?
TurtleGame
6 Posts
0
June 2nd, 2022 18:00
Does it commonly shows up the slowly-changing the colorful thing on screen??
XPS_Man
5 Practitioner
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2.4K Posts
0
June 2nd, 2022 19:00
Computer has a built in LCD self test mode, which can be triggered by holding D + Power button. In your case its getting trigger without doing it. There can be several issues.
Bad Keyboard
Motherboard Firmware bug.
Hold the power button down for 30 seconds after disconnecting power cable.
Try powering on.
Step 1 one more time and this time try accessing F12 or F2 menu, if you can access F12 menu, you can choose SupportAssist OS recovery to access repair options
TurtleGame
6 Posts
0
June 3rd, 2022 04:00
No, I can't do anything after step 1 (hold power button while disconnected the cable)
The screen is blank. (Yesterday it was glitching screen like 3 colors on screen, not fullscreen colors
XPS_Man
5 Practitioner
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2.4K Posts
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June 3rd, 2022 14:00
An external monitor ??
TurtleGame
6 Posts
0
June 5th, 2022 06:00
I don't have any cables
XPS_Man
5 Practitioner
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2.4K Posts
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June 7th, 2022 11:00
Please open the lappy and remove coin cell battery as well as main battery . This will reset firmware.
Hold the power button down for 30 seconds and put the battery back
If this doesn't work, you may need a new Motherboard.
TurtleGame
6 Posts
0
June 9th, 2022 07:00
I don't have tools
ejn63
10 Elder
•
30.7K Posts
0
June 9th, 2022 08:00
You'll need to take the system to a computer repair shop, then -- some will do a free diagnosis. Be wary of any that charge for an estimate -- just one hour's diagnosis will likely cost you twice the value of your system, and it's very likely you'll end up needing a mainboard -- which frankly is not worth the cost on a system that is this old.
You're better off shopping for a new system at this point.
XPS_Man
5 Practitioner
•
2.4K Posts
0
June 9th, 2022 14:00
All you need is a Philips head screw driver. If the machine is in warranty that repair center/ call dell