I'VE BEEN HAVING THE SAME PROBLEM FOR MONTHS - SOMETIMES THE MONITOR WILL BE FINE FOR A FEW DAYS AND OTHERS IT WILL NOT COME BACK ON NO MATTER WHAT I DO. HOWEVER, I FINALLY FIGURED OUT THE PROBLEM AND THUS A SOLUTION AND IT ACTUALLY DIDN'T COST ME ANYTHING.
MY CPU DOES NOT HAVE A VGA OUTPUT SO I WAS GOING TO GO BUY A VGA/DVI CABLE ADAPTER BUT INSTEAD I FOUND A VGA/DVI ADAPTER IN THE BOX THAT MY COMPUTER CAME IN. I ATTACHED IT TO THE DVI CABLE THAT I ALREADY HAVE AND PLUGGED THE DVI END INTO MY CPU (SINCE IT ONLY HAS A DVI AND NO VGA OUTPUT) AND THEN THE VGA ADAPTER END INTO MY MONITOR AND WA LA... IT WORKS NOW AND HAVEN'T HAD ANY PROBLEMS WITH IT GOING TO SLEEP.
WHAT I IMAGINE IS HAPPENING IS THAT THE DVI OUTPUT ON THE MONITOR IS FAULTY - EITHER FROM THE FACTORY OR THE PINS HAVE BEEN DAMAGED SO MY CABLE WAS NOT WORKING CORRECTLY. IN TRYING TO FIGURE OUT WHAT WAS WRONG, I BOUGHT A BRAND NEW DVI CABLE AND IT STILL DIDN'T WORK SO I KNEW IT WAS NOT THE CABLE. THAT NEW CABLE WAS RETURNED TO THE STORE FOR A REFUND!
Here is a step by step guide for troubleshooting monitor problems in XP. If you have a different system it will tell you and redirect you to the correct operating system page.
http://support.microsoft.com/kb/307960
Good luck,
Cullen
SOURCE: HP w2007 LCD monitor goes off Monitor going to
Make sure that everything is connected to the monitor properly. Go to the back of it and make sure the VGA or DVI cables are secured and then check the back of the computer to do the same.
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