I bought a Compaq 615 as a quick replacement laptop 2 years ago. In the past few months I've noticed that it has been getting quite hot, so much so that in the past few weeks it has been reaching critical temperature and turning itself off.
Two days ago, it turned off then wouldn't turn back on, a few hours later I tried again and it turned on so I decided to investigate a possible cause.
cpuid to monitor CPU temperature and its temperature under normal usage seemed a bit high, in the low to mid 60s. I think decided to try stress the CPU to see how hot it would get, it got up to 80 degrees, the fan turned on, and the laptop shut off.
It has been two days now and it hasn't booted up.
I've tried removing RAM and turning it on to see if I get any error notification (LED blinks or beeps), and got nothing.
I've tried unplugging the AC power, taking out the battery and holding the power button for 30 seconds.
I also tried, with the battery in, holding down the power button for some time (15 - 20 seconds) and notice that the amber light next to the power jack flashes rapidly (too quick to easily count, might be 10 rapid flashes).
My guess is motherboard, or perhaps CPU.
But I was wondering if anyone has any other suggestions for me?