As the laptop boots up keep pressing F8 on/off until you are presented with a screen of options. On that screen of options you would have boot into safe mode but also, Low resolution VGA mode.
It happens more often than you think.
Drop me a private message if you continue to have problems, i may be able to talk you through it.
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Wow Wirral History is coming along Great! Wirral History
we get +200 new members a month now