|Problems with the software on the hard drive CANNOT cause video problems while booting the computer BEFORE Windows loads, or in the bios Setup. That can only be caused by a hardware problem. |
Have you, or is it possible someone else who had access to this computer...
- dropped it, or dropped anything on it, or otherwise exposed it to a physical jolt ?
- spilled liquid on it, or sprayed it with liquid, or exposed it to liquid such as rain ?
Since the video last worked properly all the time, has there been a power failure event that happened while the AC adapter was plugged in ?
Those things are the most frequent reasons something inside the laptop has been damaged.
The most common reasons for your video symptoms are......
- there is something wrong with the built in display assembly (see above for the common causes of that)
- or with the backlight for it,
- or with the votage inverter that supplies high voltage to the backlight
- or wiring is damaged between the display assembly and the video adapter.
Usually there's nothing wrong with the video adapter and the display is fine on an external monitor.
Try connecting an external monitor to it.
Laptop no video (or video problems), and battery, AC adapter, power jack T shooting.
See response 1:
DO NOT plug in or unplug a monitor's video cable into / from a video port while the computer is running. Doing so can damage the monitor's circuits and/or the video adapter's circuits.
Some laptops will display on an external monitor without you having to do anything.
If you get no video on an external monitor, some laptops have a key combo that you must press to toggle the display to external video only / built in display video only / sometimes both - see the Owner's or User's manual for the model (e.g. press both Fn and Fx ; x is a number).
In this case those keys are Fn and F7.
If you get video symptoms on an external monitor too, your video adapter IS damaged or defective.
In most cases, except for high end more expensive computers, the video adapter on a laptop or netbook is NOT on a removable card - it's built into the mboard.
In that case you have to replace the mboard to replace the video adapter.
Apparently, the Sony VGN-AR series has at least three possible mboards, only one of which, so far, has a removable video adapter on a card that plugs into it.
"Processor•Type : Intel® Core™ Duo Processor T2500 "
Intel® Core™ Duo Processor T2500
(2M Cache, 2.00 GHz, 667 MHz FSB)
Sockets Supported PBGA479, PPGA478
The mboard must have Socket 478 or 479
MBX-176 VGN AR Series laptop motherboard mainboard
Graphics Card Type: Integrated
100% Fully Tested MBX-176 M611 laptop motherboard for VGN-AR PM965 non-integrated DDR2
Graphics Card Type: Non-Integrated
Laptop motherboard for VGN-AR LAPTOP MOTHERBOARD A1314342A MBX-176
Sony VAIO AR190G Notebook (home support page)
Has a built in blu-ray optical drive
integrated NTSC TV tuner
NVIDIA® GeForce® Go 7 series graphics and GDDR3 memory deliver advanced graphics performance
•Processor : NVIDIA® GeForce® Go 7600GT, NVIDIA® GeForce® Go 7600
•Video RAM : 128MB
•Chipset : Intel® 945PM
•Interface : VGA out w/ Smart Display Sensor, HDMI™ out and S-Video out
•TV Tuner : Yes (NTSC)
Processor•Type : Intel® Core™ Duo Processor T2500
Mobile Intel® 945PM Express Chipset
Product Name Intel® 82945PM Memory Controller
Integrated Graphics No
Dual Independent Display No
Graphics Output None