Failed Bios Flash on Sony Vaio Laptop VGN-NR180E Bought a new battery (not from Sony) and it came with a Bios update disk which according to the instructions was necesary to install for the battery to be recognized. Started the flash process which froze the machine. Waited 1 hour then turned it off. Now no POST, no boot, nothing. Is it possible to fix this

Remove the main battery then remove backup battery(small flat cell) wait for an hour and re install both batteries then try starting it

1st-What O\S (win-xp, vista, # 7,etc.) did you "RESTORE" ?
2nd-Why did you mess with the BIOS. ? Did you understand that the BIOS is the INSIDE\PHYSICAL part of the laptop and NOT the Operating System [O\S] Windows_xp, vista, #7 etc.etc.
3rd-That "cannot find operating system" could be something as simple as the BIOS was RESET by something as a 'glinch', electrical short, suddenly turning off ( not that you did it! ) of laptop , lighting while you were working ( ALMOST ALWAYS... when the computer is writing to hard drive [H\D] with laptop
The BIOS could not see the H\D because is was changed by sudden electrical surge.
That you replaced H\D, you will have to REINSTALL the O\S again.Because I will assume that you brought a DIFFERENT type of H\D [ maybe something with more GB?, different model H\D ]

The main battery needs to be replaced, or the charging ciruit on the motherboard is not working, remove main battery get a stiff toothbrush and clean terminals in the laptop incuding the battery, if no change! check the device manager to see if battery is present, if no! reset bios to factory default.

Try removing the battery, unplug from power and push the power button to clear any static or errant voltage. If this does not work, try inserting the windows disk, or recovery disk and turn on computer. It may boot into the recovery mode. Let it do an automatic recovery. Thirdly, If you can download the bios from sony that belongs in that machine, you can flash the bios back to what version belongs there.

I suggest you reinstall the windows 7 again. The installation was interrupted because the battery ran out of power, the result was a corrupted and incomplete installation of windows. And that is the main reason why you are just getting a blank screen.

my sony vaio vgn-cr353 shows in bios hard drive not found

This site can help you:

http://esupport.sony.com/US/perl/select-system.pl?DIRECTOR=DRIVER&PRODTYPE=24
Select detect my model, and your operating system, and download the software.

Remember you have to be 100% sure, its the right one.

Hope this will help you.

If the battery is not a Sony battery but an equivalent, the Sony may not recognize it as there is not the specified "bit" of information built in to it. It maybe just totally flat in which case it will take a number of hours on charge to get it recognized.
The BIOS upgrade must be done with a good battery fitted and the AC Adapter working otherwise if the power fails whilst loading, you cannot recover the BIOS again.

chaque u r Bios & conform which bios Support u r laptop, than Saifly remove hard disk conection. update a bios using sony cd-given cd. install new bios, Conect hard disk.

copied the corrupt system file (windows directory\system32\config\system) into a temporary directory, and copied the default microsoft backup (windows directory\repair\system) over the corrupt file.
http://www.computing.net/security/wwwboard/forum/16358.html