I want to plat videos in my van. Currently, the set-up is as follows: The videos are on the hard drive of my laptop (Sony Vaio VGN-TX610P), the monitor is a Bravo OVR-121FM, the PC and the monitor connect through a K-World PC to TV converter. Problem: I cannot get the videos to appear on the monitor. When I power everything up and tell the PC to go to an external monitor, all I see on the monitor is the Windows 7 logo---no icons, no mouse cursor, etc. So, the monitor is obviously getting some kind of signal, but it is incomplete.

The HDD has not been placed correctly leading to a short circuit so the laptop does not switch-on . Remove the HDD and power-on the laptop if it switches on then need to check the HDD .

Go to system restore most newer laptops have a section on the hard drive for resetting back to factory defaults

The VAIO VGN-T350 is a notebook computer designed and distributed by Sony.
The hard drive on your Sony VAIO VGN-T350, which is the unit that stores data, consists of many clusters of data that can be rewritten with new data.
If you are looking for a memory capacity upgrade, or if your old hard drive is having errors, it's time for an upgrade.
Upgrading the hard drive on your Sony VAIO will require the use of a screwdriver and will take you about 30 minutes to complete.

Turn off your Sony VAIO VGN-T350 and remove the power cord and any other peripheral components.
Turn over your Sony VAIO VGN-T350 and locate the hard drive chamber on the bottom of your laptop. It will be clearly labeled.

Use the screwdriver to remove the screw holding the lid in place.
Gently lift the hard drive and its cage away from your laptop and disconnect the data cord.
Remove the four screws located at the corners, and then remove your old hard drive from its cage.
Place your new internal laptop hard drive into the cage and replace the screws.
Connect the data cord to your new hard drive and place your new hard drive into its chamber.
Close the lid and replace the screw to complete the operation.
http://www.fonerbooks.com/laptop_1.htm
http://www.youtube.com/watch?v=rg_GvaMunas
Sony Vaio Hard Drive Replacement
This might not be your specific laptop it might give you an insight into the hard drive installation.

Ebay this hard drive should fit there are smaller capacity drives that will be compatible.
http://www.ebay.com.au/itm/New-500GB-Sata-Hard-Disk-Hdd-for-Sony-VAIO-PCG-3H2L-VGN-P530H-VGN-SR410J-B-/190882270487?pt=US_Internal_Hard_Disk_Drives&hash=item2c71784d17

500GB Sata Hard Disk Hdd for Sony VAIO PCG-3H2L VGN-P530H VGN-SR410J/B

Try this:http://www.sony-asia.com/support/download/60137/product/vgn-sz18gp

It's not so easy here's a video tutorial...
http://videosift.com/video/Why-I-will-never-buy-a-Sony-laptop-try-to-replace-the-HD?loadcomm=1

If you just need to recover the data use an online data recovery service like http://FreeDataRecovery.us

You can buy hard disk for your model from following link at low price

http://www.laptoppartsexpert.com/c-47805-sony-vaio-vgn-vgn-s-series-vgn-s170p.html

You have one of two problems...
1. You have a short in your charger cord (AC Adapter)
2. You Have A Faulty DC Jack (the port where your charger plug plugs into)

Try this manual, it will explain and show everything to you. Look in the index to the left when the file comes up and click on HDD.

http://tim.id.au/laptops/sony/vgn-sz.pdf

hard drives dont bring internet? unless i am missing something here. hard drives are to save data into.

Western Digital Scorpio WD5000BEVT Mobile Hard Drive - 500GB, 2.5", looks nice. I haven't seen any larger yet.

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4322423&CatId=1277