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Re: Blank screen on start up on Acer Extensa 4620
If you're hearing the fan, HD and see power lights but still see no display even the BIOS splash screen display then confirm toggle (fn key) to external monitor. No display in either internal or external monitor indicates board level failure.
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If your system seems to be going through its normal boot routine, look at the screen from several different angles.
If you see 'ghosting' then it is likely the display backlight or the inverter for it that has failed.
If you have, or can borrow, a standalone monitor, plug it into the VGA port of your notebook.
If you still see nothing, it may be only that the external port must be turned on in your CMOS setup but the external monitor should at least show text during the boot routine.
these types of problems are very complicated. I being a tech can fix very easy if I have the pc in front of me but to explaine to someone how to do it is very detailed. The 1st thing that any good tech would suggest is to start in safe mode and remove uninstall the software and hardware you installed. then reboot and go from there.
Can you get it to boot using any of the options it gives other than boot normally? If the blue screen is caused by hardware then installing xp will still present the problem. If the blue screen is an operating system crash then using the recovery disk or doing a repair install will solve the boot problem.
If you still rather install xp then you need to go into BIOS and set 1st boot device as CD. To go into BIOS you will need to press F10 or F2 (usually) as displayed on the splash screen when you power on