Lenovo Ideapad problem

Reinstall the driver

plug headphones and play a video or music file

if you hear it ok then the driver is installed ok

Laptops and netbooks IdeaPad Series laptops IdeaPad Y430 Lenovo Support...


check your settings

1. Click Start and type "sound" into the search bar. A list of search matches is displayed.
   
2. In the search results, click Sound under the Control Panel list.
   

The Sound screen is displayed.

try this link might help you out... laptop freezes Google Search

Have you changed any BIOS settings? I would open your BIOS menu and make sure it is set to "AHCI"

On a lenovo Ideapad U400, there is a recovery key on the left side og the pc, press that, at follow the steps on the screen.

yeah a new drive is required you can get cheap ones from like office works and computer stores... goodluck

Make sure you did it correctly. Computer should be OFF when doing the one key recovery. Turn off the computer then press the small button right beside the power button. Your computer should automatically turned on and you will go straight to one key recovery software. If this will not happen, then the one key recovery is destroyed. We need to re-image your Harddrive to have that one key recovery software back to you computer. You may call Lenovo technical support department for further assistance on how you are going to send your laptop to our depot department.

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Based on your description of the issues you may be having a DC jack issue. I would suggest to insert the ac adapter and wiggle it around see if there any indicator of it try to charge the laptop. But in most cases that a laptop does not power on its due to the jack.

Unfortunately, the most likely answer is that your hard drive is failing (has failed).

If you're under warranty, you'll need to contact Lenovo.

you are right but you can try this go to start - run type msconfig press enter.disable all start up items except synaptics and wireless if you do see any.reboot your computer.check if it happens.if it does then it`s hard ware problem.could be RAM,graphics card or any other accessory attached to mother board.take care.