Computer Monitor Blacked Out [Closed]

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Hello,

I recently connected my laptop (Toshiba Satellite) to my TCL 40" LCD screen using an HDMI cord. I set the TV to be my default screen and it moved my desktop icons there. I then set the screens to continuous display so I can multitask. Now I disconnected it and the screen won't go to the password login and is completely black. I can see my cursor but I can't login. I tried running it in Safe Mode and it worked but I can't run my software. I then tried to connect it with another HDMI cable to another TV and it just duplicates my screen (black). I don't have access to my first screen and hdmi cord how can I fix my laptop without them?

Thank you so much