Blank screen on startup

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Hello,ok my toshiba laptop screen broke so i connected my old computer screen to my laptop and when i start windows normaly the screen goes black and flickers off and on but windows started up on my laptop. but when i go on safe mode, it works perfectly i can see everything. Whats up? andim using windows vista

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What works? The laptop screen or the external monitor?
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yeea but it wont show up on the screen that i connected to my laptop. it only shows up if i go on safe mode
when i connected it for the first time. i worked perfect but then the next day it just stopped
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the external monitor works bu tnot the laptop screen because its cracked and shit. so thats why i connected another computer screen to my laptop. understand?
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When in Safe Mode you have 800 X 600 screen resolution using the Microsoft basic display software. It's possible that if the laptop is a wide screen model then you can't sync with the external monitor. I would try to change the display resolution while in Safe Mode (you might also check the refresh rate and set it to 60 Hz).

Good Luck
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how do i change both of those?
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for Vista click on an empty area of the desktop - select PERSONALIZE and DISPLAY SETTINGS
for XP click on an empty area of the desktop - select PROPERTIES and SETTINGS

you can then use the slider to adjust the screen resolution to a size that your monitor can display.

select ADVANCED and then MONITOR to change the REFRESH RATE to 60 Hertz



Good Luck