The cable from the LCD going into the system board is loose or bad. Here is the service manual for your laptop.:
http://www.nodevice.com/manual/newmans/acer/SG_TM2300_TM4000_TM4500pdf/get48658.html
You may have to copy and paste the link into your browser.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe
I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309
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