Gateway 5300
Bought this 5300 gateway . was working fine, then all of a sudden screen went black. now has lines in it. cant see when it boots, so hooked it up to monitor on pc and works fine on it, what could it be? new to laptops. went to gateway, they arent any help at all. if any thoughts lemme know , thanks so much !!
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Find the maintenance manual for your laptop. Study the manual and find out where the video cable is. If it's like many laptops, the cable will be a small ribbon cable. Disassemble the laptop enough to find the cable and to ensure it is seated correctly in its slot. Also inspect the laptop to ensure that the LCD panel's power wire is secure between the laptop body and the panel. If both cables are intact, you might have an LCD monitor that is going/has gone bad. The fact that your laptop will display properly on an external monitor would seem to rule out a bad graphics chip on the motherboard.
Follow the instructions here to remove the keyboard, then look for a small battery underneath it. Remove the small battery (it's probably similar to a watch battery), the main battery, and make sure it's unplugged from the wall. Wait half an hour and then replace everything, starting with the dinky battery under the keyboard first.
That process should reset the BIOS for you. If that was all that was causing the problem you'll just need to enter the BIOS and reset the date, time, etc.
Hope this helps.
Oops...
Usually, (though not always), they avoid the use of jumpers in laptops due to the fact that they could fall off completely if you happen to bump the thing while it's upside down (like in a briefcase, etc).