The dark patch (overheated LCD) cannot be repaired - the screen needs to be replaced.
If the system is not sleeping correctly, check your event viewer (start-search-eventvwr.msc) to see if there is evidence of a program or driver that's blocking sleep. That is usually the cause. While it's unlikely to have a hardware cause, if it does that's likely a mainboard going bad.
Depending on the system, a screen replacement could run from as little as $150 with labor to several hundred dollars (the latter if it's a touch or convertible screen) -- and if you then find out the mainboard is bad or failing, the system will be a write off, better replaced than repaired.
ejn63
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November 8th, 2018 11:00
The dark patch (overheated LCD) cannot be repaired - the screen needs to be replaced.
If the system is not sleeping correctly, check your event viewer (start-search-eventvwr.msc) to see if there is evidence of a program or driver that's blocking sleep. That is usually the cause. While it's unlikely to have a hardware cause, if it does that's likely a mainboard going bad.
Depending on the system, a screen replacement could run from as little as $150 with labor to several hundred dollars (the latter if it's a touch or convertible screen) -- and if you then find out the mainboard is bad or failing, the system will be a write off, better replaced than repaired.