BIOS Updates forum

can someone help me identify the boot lock pad/ s which i need to short.

this is a compaq presario notebook 1690,

i flashed the wrong bios, so nothing shows up now, no video no floppy ...

i have the pictures of the motherboard

http : / / ww w.eden.rutgers.edu/~sravinu/bios/bios_atmel.jpg

and http : / / w ww.eden.rutgers.edu/~sravinu/bios/mb_back_full.JPG

there are some other images

at http : / / ww w.eden.rutgers.edu/~sravinu/bios

thanks

Try peeling away the "Compaq partnumber" stickers in the RAM area, look for Jumpers:

PAD501 & PAD502


Joe

https://web.archive.org/web/20050318002 ... index.html

This is the most the compaq technicians will know about your particular laptop. Perhaps an ASC may know how to fix this problem, but they probably end up just replacing the mobo.

Just an update, also, take a look on the top of the PCB, it may have an area for a PLCC type ROM, I just got done working with a dead BIOS on a 1600

The PCB came orgininally with a TSOP on the bottom of the board, the bootblock was useless, removed the TSOP ROM, installed a 2mbit 5v PLCC on the top and it works,

If you can get someone to sell you and program a 32 pin PLCC ROM you can use that.

Joe

hello joe,

thanks for your reply, can i get the chip from you, i am in NJ
i saw that the motherboard has a slot of this rom on top of it

www.badflash.com offers PLCC bios replacement chips.

Order (if possible) a winbond 2mbit 5v chip you may need to send them the bios image.

joe

when my computer was working i made a backup of the working bios and boot block using uniflash, is it good enough for a bios image to send to badflash.com.

or would you know any location from where i can get the bios for a compaq 1690.

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