Shut down the notebook, unplug the AC Adapter and then remove the battery. Hold down the Power button for a full minute. Plug in the AC Adapter ( leave the battery out for the moment ) and see if the notebook will start.
hold button for 15 seconds, max. 60 is overkill.
flash white is PC locked up in SLEEP MODE.
your users manual covers what to do.
if changes OS, the driver are now bad and sleep fails. is super common cause.
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SOURCE: 3yr old got ahold of monitor
ok, get to the event where you get this to happen "...then turn it back on the monitor does come on normally...", but just after power-up, press the F8 key to go to safe mode. If nothing visible, press ENTER anyway...get to safe mode yet?
SOURCE: Philips 170S4 white screen not display.
its in the power suppy section,most of the lcd monitor has this problem,try to check the capacitor electrolytic or replace all th 16v capacitor
SOURCE: Blank Screen, Flashing orange power light...
1st Idea - Let's take a look under the cover. I'm not sure how tech savvy you are, but I'm sure you're pretty good if you have a soldering iron. Once inside locate the power supply section. See if you see any blown capacitors on it or any other boards. One obvious way is to see if they are bad is if they have bulging up tops. There could be some weak or bad ones that aren't popped up, but let's start from there. If there are any bad caps, they are dirt cheap price wise at an electronics shop. Keep me posted and let em know what you find. - Scotty
SOURCE: blinking monitor power button and flashing image
I buy and sell these monitors (Dell E17FP) the problem is with the transisters (Q739, Q740, Q759, Q760) they short out and the monitor will just blink on and off. You have to desolder them and test them with a simple battery and light circuit. The reason they blow is because of the dirty solder joints by the transformers. If only on pair of backlights work the problem maybe transisters Q751, Q743. I home this answers your questions.
SOURCE: When I press the power button LG displaying chars for 1 second
Had the same problem, turned out it was due to a faulty capacitor on the inverter board, 680uF 25V (105 celsius rated). Simple to fix once you have the unit dismantled and the correct replacement part. Two screws hold the shroud on, but you need to be careful with an (old) credit card levering it off.
Unit is now working fine.
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