Pink screen/occasionally lilac in Windows 7

I am currently running Windows 7 on my home pc.  I have had Windows 7 installed since it was released and it wasn't up until the past few weeks that my screen suddenly changes to pink.  It will occasionally switch back to normal.  I have also seen it a lilac color as well.  Contacted Samsung & through diagnosis, determined it is not the monitor.  I also contacted Acer (pc purchased 1 yr ago), & they advised me to disconnect everything from the system.  Free of all connections, press & hold the power button on the tower for 30 seconds, & then restart as usual.  The system booted up fine but within approx 2 min, I was back to a pink screen.  All drivers have been updated & I have troubleshot various areas & done a system restore multiple times.  I don't know what else to do.  Acer states that I am a few days past my warranty period & it will cost me a minimum of $200.  Again, this pc was just purchased the end of Aug, last yr.  Do you have any other suggestions for me?  I would greatly appreciate any advise you can give. 
 

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Last updated August 13, 2019 Views 8,971 Applies to:
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Thanks for your reply.  Yes, there are but I think I have figured out the problem.  After 2-3 long, pain-staking weeks of looking at a pink screen, I think it is nothing more than the connection from the video cable(?), that runs from the monitor to the pc.  The monitor had been positioned differently & since I have had some modifications put in place, I haven't had to dreadfully look at that pink screen.  It has been over an hour now & things are looking promising.

Sorry for wasting your time & again, thank you kindly for your reply.

Have a good evening.

 

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