Did they try to get you to send it to them for the fix??
I really don't think sleep mode taxes the system... sounds a bit unbelievable to me...
Maybe trying to scare you into some repair work for themselves???
My other post does state that if a screen saver is being used there is no energy saving by going into sleep mode.. I always set my screen saver to blank or none..
You don't need to actually open the case to acess the bios settings..
But the button itself is the problem - if dirty or a broken spring or bent contact... then opening the case would need to be done.. unless the front panel pops off.. there are many designs of cases so, hard to say for sure on yours..
[4. Can sleep features wear out hardware by forcing the computer to turn on and off several times a day?
“Modern computers are designed to handle 40,000 on-off cycles before failure, and you’re not likely to approach that number during the average computer’s five- to seven-year life span. In fact, IBM and Hewlett Packard encourage their own employees to turn off idle computers, and some studies indicate it would require on-off cycling every five minutes to harm a hard drive.”]
Have any geeky friends?? They can take a look at it for you..