Vaio PCG-K37 dark screen in XP

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Sony Vaio PCG-K37 laptop has dark screen when it runs XP If the screen
is uder a lamp I can see it has booted XP looks like the illumination is
off. It only does it under XP, on boot up bios is fine.  I have tried
knoppix, linux live cd no problems, what does XP do that affects the video?
I have restored, loaded an new version of XP same problem same deal when
I reloaded the video drivers.  Sony so far has been no help. I suspect
that the problem might be in laptop display driver electronics if a
external monitor is connected it works fine.
Any help would be appreciated

Re: Vaio PCG-K37 dark screen in XP

Sounds like you have lost the video "back light".  If it is under warranty,
send it in; if not; this is an item not covered and fairly expense to
replace.  Check ebay: saw someone out there repairing Vaio's: $200,
guaranteed if they fix it; if they don't, your only out shipping back/forth.
--  // (not better than you
deserve, just more than you're used to)  // (for new
lines of wireless service; all carriers; the phones are almost always a

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