HP Pavilion dv7 Notebook starting with Blank White Screen--He​lp??

I've had an HP Pavilion dv7 Notebook for a couple years now. Today I go to start it up (without the power cord plugged in), and a completely white screen appears. I'm thinking, maybe it's still starting up/working some kinks out. Then I hear the Windows 7 twinkling start up sound that usually happens when you get to your log in screen. So it seems the computer itself is working, but there is zero display on the screen. If anyone has any good advice/experience with this/knows how I can fix it or what I should do, PLEASE let me know! Computer problems are so distressing

I had this problem with my father's pavillion.
There was a broken pin in the screen socket on the motherboard so I guess it was always making poor contact until one day this pin must have broken off completely and the screen would only display completely white.
I inserted a fine solid wire (not multi-strand) into the plug at the right point so that it only just stuck out enough to make contact with what was left of the pin in the socket, whilst being fully inserted into the plug.
I then taped the plug/socket together to make sure it didn't loose contact by coming loose.
Seems to have solve the problem in the short term (but the socket should need replacing for a long-term fix).

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