Sony pcg-7148l would not boot

Yes you can reinstal the OS!

When you plug in the power cord is there any lightswhatsoever on the laptop, where the plug goes in or on the AC Adapter of thepower cord?

When you press the power button do you hear fans running, hard drive spinning,lights on the computer, hear any beeps or lights constantly blinking, hear theDvD/CD drive click and the light on the drawer of the DvD/CD turn on for asecond or two? If so the laptop is trying to boot or may have booted, butthe screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with thelaptop and why it is not booting. Most times it's a motherboard issuewhen you hear beeps or blinking lights continuous.

Maybe your power cord is bad if you don't get anything to happen whatsoeverwhen you press the power button. And if that's true maybe you wasoperating off the battery the last time you had it on and since the power cordis bad, it was not charging the battery so the battery is drained and the powercord is bad.

Maybe you have a Static Charge Buildup. Remove the Power Cord, Remove theBattery, then Press and Hold the power button for 30seconds. After 30 seconds plug the power cord back in (leave the batteryout) and hit the power button to see if it boots. If it does, you can putthe battery back in and let it charge.Maybe your DC Power Jack which is where the power cord plugsinto the computer is bad. Take an ink pen and push the tip inside thejack and see if the little pin wiggles, if so the jack is bad. You'll have totake the laptop apart to fix it. Most times it is soldered onto themotherboard, so you will have to desolder the old and solder a new one.

Hello.

The most common reasons for power issues are the battery, power jack and power adapter/cord.

Power off and remove the battery. If the laptop powers on with just the adapter connected, your battery is faulty.

If you move/wiggle the power adapter at the point where it connects to the laptop, and the power goes off and on, the power jack is the problem.

The power jack is inside the laptop and either needs soldering or replacement. If a power jack problem, it should be addressed by someone knowledgeable.

If no change, the power adapter is probably faulty and needs replacement.

Hope this helps.

Hi.

This sounds like there is a problem with the battery.
Remove the AC mains power and take out the battery from the laptop. Plug AC power back in and try booting the laptop up.
If it boots up let it boot into Windows/linux and then shut the computer down as normal. Remove AC power and re-insert the battery. Plug AC back in and power it up, see if it does the same thing. If it does the same thing the battery is faulty. If it boots up with the battery in then there was a glitch.




Regards.

Hello sir, Hi, unless we find a replacement cd drive for your laptop. I don't see how this goes. you see, the laptop you have does not support boot from USB drives, (see setup on the bios first boot, hopefully theres a usb boot option, if not you may opt for a WINME install.) so its useless to use the internal CD rom drive.

you shouldn't need to have to press f9 to boot from cd rom if you have it set in the bios as the first boot device , are you sure the copy of windows on cd that you have is bootable. Try booting from the disc on another laptop or pc and see if you can start it



Another option to try is to boot from a usb drive


instructions on how to do that are here

http://www.xtremesystems.org/forums/showthread.php?t=118576

once you have booted to usb you should be able to access the cd rom

depending on what version of windows you are trying to install you will need to run different programs.

you could also install vista or windows 7 to usb drive and install it from that, it is much quicker than installing from cd/dvd you would need to be able to boot from usb to start with though

how to install vista or windows 7 from usb instructions can be found here

http://www.intowindows.com/how-to-install-windows-7vista-from-usb-drive-detailed-100-working-guide/

please vote for me if you found any of this useful

I had one with the same symptoms, the way i fixed it is by taking it all apart and resolder the system chasis grounds on the mother board, then reseting the motherboard's memory battery. A bit complicated for those with little knowledge on computer repair. You may have to take it to a computer shop, or try fixing it yourself. It took a while to figure it out.

Hello,

Its possible that you already have a bad hard drive. It may have crashed. Your system will not boot without the hard drive running. The computer will keep on trying to look for the Hard drive that's probably why it looks like its doing nothing. Bring your machine to sony and have them fix it. If you know how to open up your Vaio, try to check the Hard drive connection and see it its loose, if its not loose. its time to replace the hard drive.

I hope this helps. Thanks and have a nice day.

- HotRatchet

I have the same problem some times. Just reboot and it should work :)

the light will always do this. because i have one at home. Just power it up and then power it back down and it should just go back to normal, i have had this problem before and it will be fine.