Laptop not booting to BIOS

I have a Sony PCG-5G3L that will not boot to bios. It acts like its going to start but it just goes to a black (but backlit) screen. Everything works, all the buttons like num lock, scroll lock etc, but I can't even get to the bios to re-install windows.
I have trouble shot the RAM and it's fine. I have booted with the hard drive removed and still nothing.
It there a way to reset the BIOS or something? I've looked for the jumpers in the bottom but to no avail.

Sorry if this is in the wrong area. I honestly didn't know where to post it.

 

Does anything show on the screen? It sounds like its either a corrupted bios or the eeprom on the mb is damaged.

 

Nothing shows on the screen. I pulled out the keyboard looking for the bios jumper but i didn't find it. Nothing on the bottom by the RAM either.

 

I'd guess its a bad mobo, possibly the igp is bad.

 

I had a problem like that once on my vaio. try this:
unplug the ac power and remove the battery then hold the power button down for 15+ seconds.
next put the battery back in and try booting.

 

Basically I tried to update the Bios on my Laptop and i believe that the Upgrade somehow messed up, i am now left with a laptop with no Bios, Every time i boot i get no display what so ever but the laptop does actually switch on.

 

look
i had once my vaio updated my vaio's bios with corupted bios.and so the laptop was almost dead.so i make a copy of a good bios for the same model then i removed the hard disk and buttery and tried to boot the maschine from a usb with good bios and it worked for me.
Just grab a bios for your maschine then make a bootable usb or floby and try to boot with the hard disk removed,try it.

good luck

 

OK I made a bootable flash drive but the BIOS are an .exe file.
I extracted the exe and put the files on the root of my flash and started with no hard drive and no battery but nothing.
Anything i'm missing?

 

Yup. It wont work unless you had set the boot up option initially itself, to allow boot from usb.

ofcourse if you can still boot from a bootable cd-rom (if you're machine has it then its possible).

unless you send it to service or take out the bios chip, reprogram it in a flash programmer with the correct bios, you're pretty much screwed in my opinion.