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<nicolette> Ok basically I have a toshiba m45-s331 laptop that suddenly has no display even with an external monitor.heres what happened last:few things under unknown devices in the device manager, & they all had ? next to them.go into properties they all said no drivers installed. went to toshiba site downloaded drivers and one thing was left: pci device still with ?. Properties said device not working anyways cuz no drivers installed so I disabled the device.I dont know if this is what caused the problem, the only other thing that happened was a windows update before shutting down computer.How can I restore or fix without being able to see anything?Please help!!
It seems as though you have a graphics card fault. This usually happens due to over heat which is caused by using your machine on your lap. I know people call them laptops but that is not exactly polically correct. Using the machine directly on your laptop will block the vents at the bottom of the machine causing the motherboard to overheat. This will then lead to the graphics chip or other Ball Grid Array (BGA) Chips to heat up causing the solder points to oxidise. The cheapest way to resolve this issue is to get the BGA chip reworked on, this requires specialist equipment ie BGA Rework station, which uses Infra Red heating technology. Alot of companies claim they can carry out this work but do no have the correct equipment which can actually cause more damage to the machine.
I have provided a link below to a website of a company I got my machine fixed and it works fine now.
You could try and boot it in to safe mode, if you can get a screen you can re activate the drivers and then let windows search online for new drivers.
Even though it said there were no drivers it just meant none it could recognise. My daughters laptop did something similar and i updated all the drivers that i could find then let windows fill in the last one which was "unknown high definition audio device on PCIE channel.
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