Laptop won't post or boot, power light is on

[Guest]

This question pertains to a Lenovo Yoga 11S running Windows 8.1. It has 3rd generation Intel® Core™ i5-3339Y (1.50GHz 1600MHz 3MB),128GB SSD and 4GB RAM.

About a week ago I noticed that it took longer than usual for the system to post and present me with the Windows login screen (usual time is literally 7 or 8 seconds from pushing the power button to Windows login). I shrugged it off and had no further issues for several days. I tend to leave it on stand-by until Windows prompts me for updates. Updates are just about the only time I ever shut it down or restart. The system would resume from standby instantaneously as usual during this time period.

A few days ago I did a shutdown to install updates. This time the power-up took more like 2-3 minutes to post and reach Windows login screen. I decided to shut it down and see if I could reproduce the problem. This time it was over 10 minutes before it randomly posted.

Currently the computer will not post or boot at all. The battery takes a charge and the light comes on when I hit the power button, but the system doesn't post or boot. I have tried with the power cable plugged in as well.

I have reseated the RAM and SSD with no improvement.

Curious if anyone has any ideas? This laptop is out of warranty.

Thanks

 

[sirstinky]

I would do a data backup on it ASAP. If you have another PC, take out the SSD and install it in the other PC, or get a SATA to USB dock/adapter to get to the data that way. Not sure of the exact problem, but it from experience, any time a PC slows waayyy down randomly, it is because of a bad hard drive or corrupted Windows system files/boot files. I am not familiar with the Yoga, but from a PC hardware/software standpoint, those are the most likely culprits.

 

[Guest]

I don't keep any data on it, but I'm hoping to get it working again. Prior to this failure it was an awesome device.

I can't even get into BIOS. All I get literally is a power light.

 

[sirstinky]

The fact that there's no POST tells me that it's hardware. You'll still get POST even if Windows is toast and it will give you an error saying no boot loader, etc. Most likely something inside the PC has gone bad. That's good there's no data on the drive.

 

[Guest]

I've just now noticed that the internal fan is not running when I turn on the power. This is the first time I've ever looked inside so I don't even know if the fan is supposed to run immediately or if it cuts on once the CPU reaches a certain temperature, but I assume it should always be on and it's not. That makes me wonder if there's a sensor that prevents the system from even posting when it detects fan failure. I guess the only way to test this is to replace the fan, but they are $70 :-/