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Default Laptop Screen problem diagnosis: where to start?
Old 15th September 2017   #1
Join Date: Aug 2017
Posts: 34

Not sure where to start on this one. Yesterday I reinstalled Win 7 with a new HDD on an old Toshiba L300 laptop. The installation went well except for twice when, before the boot options screen came up, the screen went black and then showed some colours in horizontal lines or even dots. This happened so quickly I didn't have the time to take a picture of it. It would almost look like one of those old failing TV monitors. I quickly hard booted the laptop by pressing the power button, rebooted and it went into F8 mode so I chose safe mode.

After the restart and in normal operating mode I have had no problems. This has happened only twice. Is there any way to run a free test using software to understand what the problem may be?


I didn't find the right solution from the internet.

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