Just a wild guess but I suspect an intermittent electrical connection
between motherboard and display panel. I don't think that sleep mode is
related other than that the machine has to be on for a while before that
takes hold. I suspect that's giving it time to warm up and the thermal
expansion is fixing the intermittent connection.
If it were mine I'd open it up and pop the ribbon cable between
motherboard and display panel off and on several times. If the ribbon
cable has connectors at both ends then do the same on the other end.
I'd also wipe down any visible electrical contacts with some alcohol
while the cable is off. Then reassemble and see if that fixed it. If
you feel uncomfortable doing that someone at one of your local computer
shops should be able to do that in 15 minutes.
I have 2 laptops. An old Dell (WinXP upgraded to Win 7) and a much
newer Lenovo with Win 7. It just so happens that I downloaded the
repair manual from Dell for my machine (no cost) and it seems that what
I'm suggesting is fairly easy on that machine. You have to remove a
plastic back panel (2 screws), pry up a plastic bezel above the keyboard
working from one side to the other and then remove the keyboard (2
screws) The only tricky point is having to lift the keyboard off in
order to get to the display cable. That needs to be done with at least
a little bit of care so you don't scatter the keys all over your work table.
Chuck Norcutt
On 4/18/2016 3:30 PM, Charles Geilfuss wrote:
Greetings All,
I have a question regarding my laptop. It is a Compaq that I purchased
around the time Windows 7 was coming out. It came with Vista but had a free
upgrade to 7 which I did immediately. The upgrade went flawlessly and the
laptop has given me no problems. In the last couple of days, after I boot
it up in the morning, the screen will blink in a random fashion. It appears
the screen goes black for a small fraction of a second and has the
appearance of a short flicker (very annoying). If I turn it on and let it
sit unused until it goes into sleep mode, when I reawaken it, the flicker
has gone away until the next time the machine is rebooted. Does this
indicate impending doom? I keep my files backed up so if the worst happens
I'm covered. Any thoughts or suggestions? I have run viral/malware scans
and all are negative.
Charlie
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